武汉亿嘉隆机电设备有限公司

主营产品: 泵,阀,进口液压元件,电子元器件

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公司信息

人:
袁荣
址:
武汉市洪山区雄楚大街549号
编:
430070
铺:
https://www.ppzhan.com/st107527/
给他留言
DSG-03-2B2A-A100-50DSG-03-2B2A-A100-50油研电磁换向阀
DSG-03-2B2A-A100-50油研电磁换向阀
参考价 面议
具体成交价以合同协议为准
  • 型号 DSG-03-2B2A-A100-50
  • 品牌
  • 厂商性质 经销商
  • 所在地 武汉市

更新时间:2018-05-14 09:00:00浏览次数:553

联系我们时请说明是包装印刷产业网上看到的信息,谢谢!

【简单介绍】
DSG-03-2B2A-A100-50油研电磁换向阀
Yuken Oil Hydraulic Equipment
油研液压设备
Directional Control Valves
方向控制阀
Solenoid Operated Directional Valves
电磁换向阀
DSG-03 系列电磁换向阀
【详细说明】

修其善则为善人,修其恶则为恶人。—— 汉·扬雄《法言·修身》
DSG-03-2B2A-A100-50油研电磁换向阀
油研 液压阀 方向控制阀 YUKEN 电磁换向阀 阀门 电磁线圈
DSG-03-2B2A-A100-50 DSG-03-2B2A-A100-50油研方向控制阀
DSG-03-2B2A-A100-50 DSG-03-2B2A-A100-50油研方向控制阀
Yuken Oil Hydraulic Equipment
油研液压设备
Directional Control Valves
方向控制阀
Solenoid Operated Directional Valves
电磁换向阀
3/8 Solenoid Operated Directional Valves, DSG-03 Series
DSG-03 系列电磁换向阀
电磁铁等各处以新设计思想开发的划时代的高压、大流量电磁阀。采用湿式电磁铁,寿命长,噪声低,无外部泄漏。
- 适应多样化需要的类型
  具备有两种类型,选用zui适用的阀。
  ·标准型,高压(31.5MPa),大流量(120L/min)。
  ·无冲击型,有效地减小阀芯换向引起的噪声和管道振动。
- 稳定性的工作
  高吸力、强力弹簧保证了污染工况下仍有良好的动作稳定性。
- 具备有符合各种标准的产品
  为对应面向海外设备出口,可供应UL/CSA认定品和CE标记产品。
标准型
DSG-03-3C*-*-50
DSG-03-2D2-*-50
DSG-03-2B*-*-50
流量至 120L/min
压力至 31.5MPa(仅对阀芯“60”型)/25MPa
回油管允许背压:16MPa
zui高换向频率:240min-1(仅对R型电磁铁)/120min-1
无冲击型
S-DSG-03-3C*-*-50
S-DSG-03-2B2-*-50
流量至 120L/min
压力至 25MPa
回油管允许背压:16MPa
zui高换向频率:120min-1
油研 液压阀 方向控制阀 YUKEN 电磁换向阀 阀门 电磁线圈
DSG-03-2B2A-A100-50 DSG-03-2B2A-A100-50油研方向控制阀
DSG-03-2B2A-A100-50 DSG-03-2B2A-A100-50油研方向控制阀
供应商信息:武汉亿嘉隆机电设备有限公司
Attn:袁荣




凡人之性成于习。圣人教以率之,法以治之,天下古今之风以善为归,以恶为禁久矣。—— 明·王廷相《答薛君采论性书》
DSG-03-2B2A-A100-50油研电磁换向阀
油研 液压阀 方向控制阀 YUKEN 电磁换向阀 阀门 电磁线圈 液压设备 电磁阀
Yuken Oil Hydraulic Equipment
油研液压设备
Directional Control Valves
方向控制阀
Solenoid Operated Directional Valves
电磁换向阀
3/8 Solenoid Operated Directional Valves, DSG-03 Series
DSG-03 系列电磁换向阀
型号说明
"S-DSG-03-2B2A-D24-C-N-50-L"
"S"--类型:
  无记号 = 标准型
  S = 无冲击型
"DSG"--系列号:
  DSG = 电磁换向阀(底板安装型)
"03"--规格:03
"2"--阀位数:3,2
"B"--阀芯弹簧布置:
  C = 弹簧回中
  D = 无弹簧定位
  B = 弹簧复位
"2"--阀芯型式:2,3,4,8,40,5,60,9,10,11,12
"A"--仅使用中间位置和旁侧位置的阀才标记:
  A = 中位和电磁铁a通电位置
  B = 中位和电磁铁b通电位置
"D24"--线圈类型:
  交流:A100,A120,A200,A240
  直流:D12, D24,D100
  交流(交直整流型):R110, R220
  交流(交直整流快速返回型):RQ100
"C"--手动操纵型式:
  无标记 = 手操纵推杆
  C = 按钮锁紧(任选)
"N"--电气连接型式:
  无标记 = 接线盒型
  N = DIN插头型(任选)
  N1 = DIN带通电指示灯插头型(任选)
"50"--设计号
"L"--电磁铁反装型:
  L = 仅电磁铁反装时标记

YUKEN油研油液设备
电磁阀 方向控制阀
电磁换向阀 阀门 液压阀
DSG-03-2B2-A240-50
DSG-03-2B2-A100-50
DSG-03-2B2-D24-50
DSG-03-2B2-A220-50
DSG-03-2B2-A110-50
DSG-03-2B3-A240-50
DSG-03-2B3-A100-50
DSG-03-2B3-D24-50
DSG-03-2B3-A220-50
DSG-03-2B3-A110-50
DSG-03-2B2B-A240-50
DSG-03-2B2B-A100-50
DSG-03-2B2B-D24-50
DSG-03-2B2B-A220-50
DSG-03-2B2B-A110-50
DSG-03-2B2A-A240-50
DSG-03-2B2A-A100-50
DSG-03-2B2A-D24-50
DSG-03-2B2A-A220-50
DSG-03-2B2A-A110-50
DSG-03-2B3B-A240-50
DSG-03-2B3B-A100-50
DSG-03-2B3B-D24-50
DSG-03-2B3B-A220-50
DSG-03-2B3B-A110-50
DSG-03-2B60B-A240-50
DSG-03-2B60B-A100-50
DSG-03-2B60B-D24-50
DSG-03-2B60B-A220-50
DSG-03-2B60B-A110-50
DSG-03-2B4A-A240-50
DSG-03-2B4A-A100-50
DSG-03-2B4A-D24-50
DSG-03-2B4A-A220-50
DSG-03-2B4A-A110-50
DSG-03-2D2-A240-50
DSG-03-2D2-A100-50
DSG-03-2D2-D24-50
DSG-03-2D2-A220-50
DSG-03-2D2-A110-50
DSG-03-3C2-A240-50
DSG-03-3C2-A100-50
DSG-03-3C2-D24-50
DSG-03-3C2-A220-50
DSG-03-3C2-A110-50
DSG-03-3C3-A240-50
DSG-03-3C3-A100-50
DSG-03-3C3-D24-50
DSG-03-3C3-A220-50
DSG-03-3C3-A110-50
DSG-03-3C4-A240-50
DSG-03-3C4-A100-50
DSG-03-3C4-D24-50
DSG-03-3C4-A220-50
DSG-03-3C4-A110-50
DSG-03-3C60-A240-50
DSG-03-3C60-A100-50
DSG-03-3C60-D24-50
DSG-03-3C60-A220-50
DSG-03-3C60-A110-50
DSG-03-3C9-A240-50
DSG-03-3C9-A100-50
DSG-03-3C9-D24-50
DSG-03-3C9-A220-50
DSG-03-3C9-A110-50
DSG-03-3C10-A240-50
DSG-03-3C10-A100-50
DSG-03-3C10-D24-50
DSG-03-3C10-A220-50
DSG-03-3C10-A110-50
DSG-03-3C12-A240-50
DSG-03-3C12-A100-50
DSG-03-3C12-D24-50
DSG-03-3C12-A220-50
DSG-03-3C12-A110-50

……

水性虽能流,不导则不通;人性虽能智达,不教则不达。—— 唐·马总《意林·成败志》

油研 液压阀 方向控制阀 YUKEN 电磁换向阀 阀门 电磁线圈 液压设备 电磁阀
Yuken Oil Hydraulic Equipment
油研液压设备
Directional Control Valves
方向控制阀
Solenoid Operated Directional Valves
电磁换向阀
3/8 Solenoid Operated Directional Valves, DSG-03 Series
DSG-03 系列电磁换向阀
型号列举
DSG-03-3C2-D24-50
DSG-03-3C4-D24-50
DSG-03-2B2-D24-N1-50
DSG-03-2B8-D24-N1-50
DSG-03-2B3-D24-N1-50
DSG-03-2B2-D24-50
DSG-03-3C4-A110-50
DSG-03-3C4-A220-N1-50
DSG-03-3C60-D24-N1-50
DSG-03-3C12-D24-50
DSG-03-2B2-A110-N1-50
DSG-03-2B3B-D24-50
DSG-03-3C9-D24-N1-50
DSG-03-2B8-D24-50
DSG-03-3C40-D24-N1-50
DSG-03-3C10-D24-50
DSG-03-2B2B-D24-N1-50
DSG-03-3C2-D24-N1-50
DSG-03-3C4-D24-N1-50
DSG-03-3C2-D24-50
DSG-03-3C4-D24-50
DSG-03-3C2-A220-N1-50HZ-50
DSG-03-2B3-D24-N1-50
DSG-03-3C11-D24-N1-50
DSG-03-3C12-D24-T-N1-50
DSG-03-2B2-D24-N1-50-L
DSG-03-3C2-R220-50
DSG-03-3C4-A200-70
DSG-03-2B10B-D24-N1-50
DSG-03-3C12-D24-N1-50
DSG-03-2B2-D24-50
DSG-03-3C4-A110-50
DSG-03-2D2-D24-N1-50
DSG-03-2B2-T-D24-N1-50-L
DSG-03-3C40-D24-N-50
DSG-03-2B8-D24-N-50
DSG-03-3C10-D24-N1-50
DSG-03-3C2-A110-50
DSG-03-3C4-A220-N1-50
DSG-03-2B2-A220-N1-50
DSG-03-3C3-A220-N1-50
DSG-03-3C60-D24-N1-50
DSG-03-3C60-A220-N1-50
DSG-03-2B8-D24-N1-50-L
DSG-03-2B2-A220-50-50HZ
DSG-03-3C4-A220-50-50HZ
DSG-03-2B2-A110-50
DSG-03-2B3-D24-N1-50-L
DSG-03-3C12-D24-50
DSG-03-3C40-D24-50
DSG-03-2B10B-D24-50
DSG-03-2B2B-D24-50
DSG-03-3C60-A220-50
DSG-03-3C60-D24-N-50
DSG-03-2B2-A110-N1-50
DSG-03-2B3-D24-50
DSG-03-2B3B-D24-50
DSG-03-2B2B-D24-N1-50L
DSG-03-3C9-D24-N1-50
DSG-03-2B8-D24-50
DSG-03-3C2-A220-N-50
DSG-03-2B2-A220-N-50
DSG-03-3C2-D24-N-50(含密封圈)
DSG-03-3C60-D24-50
DSG-03-2B12B-D24-50
DSG-03-3C3-A110-50-50HZ
DSG-03-2B2B-A220-N1-50
DSG-03-2B3B-D24-N1-50
DSG-03-2B8-A220-50
DSG-03-3C60-R220-50
DSG-03-3C40-A220-50
DSG-03-3C60-A110-50
DSG-03-3C40-D24-N1-50
DSG-03-2B60B-D24-N1-50
DSG-03-2B3B-A220-50
DSG-03-3C12-A220-N1-50
DSG-03-2B2B-A220-50
DSG-03-2B3B-A220-N1-50
DSG-03-2B2A-A110-50
DSG-03-3C8-D24-N1-50
DSG-03-3C10-R220-50
DSG-03-3C11-A220-50
DSG-03-3C60-R110-N1-50
DSG-03-2D2-A220-N1-50
DSG-03-3C2-R110-50
DSG-03-3C4-R110-50
DSG-03-2B2-D24-N1-50
DSG-03-2B3-D24-N1-50
DSG-03-3C2-D24-N1-50
DSG-03-3C4-D24-N1-50
……
性恶之人,亦不禀天善性,得圣人之教,志行变化。—— 汉·王充《论衡·率性》
YUKEN油研液压设备 阀门
方向控制阀 电磁阀 液压阀
DSG-01 系列电磁换向阀
型号列举
DSG-01-2B2-A100-70
DSG-01-2B2-A100-70-L
DSG-01-2B2-A100-N-70
DSG-01-2B2-A100-N1-70
DSG-01-2B2-A100-70
DSG-01-2B2-A120-70
DSG-01-2B2-A120-70-L
DSG-01-2B2-A120-C-70
DSG-01-2B2-A120-C-N-70
DSG-01-2B2-A120-C-N1-70
DSG-01-2B2-A120-N-70
DSG-01-2B2-A120-N-70-L
DSG-01-2B2-A120-N1-70
DSG-01-2B2-A200-70
DSG-01-2B2-A200-N-70
DSG-01-2B2-A200-N1-70
DSG-01-2B2-A240-70
DSG-01-2B2-A240-70-L
DSG-01-2B2-A240-N-70
DSG-01-2B2-A240-N1-70
DSG-01-2B2-D100-70
DSG-01-2B2-D110-70
DSG-01-2B2-D12-70
DSG-01-2B2-D12-70-L
DSG-01-2B2-D12-C-N-70
DSG-01-2B2-D12-C-N1-70
DSG-01-2B2-D12-D-70
DSG-01-2B2-D12-D1-70
DSG-01-2B2-D12-N-70
DSG-01-2B2-D12-N-70-L
DSG-01-2B2-D12-N1-70-L
DSG-01-2B2-D24-70
DSG-01-2B2-D24-70-L
DSG-01-2B2-D24-70
DSG-01-2B2-D24-70-L
DSG-01-2B2-D24-C-N-70
DSG-01-2B2-D24-C-N1-70
DSG-01-2B2-D24-D-70
DSG-01-2B2-D24-N-70
DSG-01-2B2-D24-N-70-L
DSG-01-2B2-D24-N-70-L
DSG-01-2B2-D24-N1-70
DSG-01-2B2-D24-N1-70-L
DSG-01-2B2-D48-N1-70
DSG-01-2B2-R100-70
DSG-01-2B2-R100-70-L
DSG-01-2B2-R200-70
DSG-01-2B2-R200-N-70
DSG-01-2B2-R220-70
DSG-01-2B3-A100-70
DSG-01-2B3-A120-70
DSG-01-2B3-A120-70-L
DSG-01-2B3-A120-N-70
DSG-01-2B3-A120-N-70-L
DSG-01-2B3-A120-N1-70
DSG-01-2B3-A200-70
DSG-01-2B3-A200-70-L
DSG-01-2B3-A200-N-70
DSG-01-2B3-A240-70
DSG-01-2B3-A240-70-L
DSG-01-2B3-A240-N-70
DSG-01-2B3-D110-N-70
DSG-01-2B3-D12-70
DSG-01-2B3-D12-N-70
DSG-01-2B3-D12-N-70-L
DSG-01-2B3-D12-N1-70
DSG-01-2B3-D12-P-70
DSG-01-2B3-D24-70
DSG-01-2B3-D24-70-L
DSG-01-2B3-D24-C-N-70
DSG-01-2B3-D24-D-70
DSG-01-2B3-D24-N-70
DSG-01-2B3-D24-N-70-L
DSG-01-2B3-D24-N1-70
DSG-01-2B3-R100-70
DSG-01-2B3-R200-N-70-L
DSG-01-2B8-A100-70
DSG-01-2B8-A120-70
DSG-01-2B8-A120-N-70
DSG-01-2B8-A240-N-70
DSG-01-2B8-A240-N-70-L
DSG-01-2B8-D12-70
DSG-01-2B8-D12-N-70
DSG-01-2B8-D24-70
DSG-01-2B8-D24-N-70
DSG-01-2B8-D24-N-70-L
DSG-01-3C2-A100-70
DSG-01-3C2-A100-C-70
DSG-01-3C2-A100-N-70
DSG-01-3C2-A100-N1-70
DSG-01-3C2-A120-70
DSG-01-3C2-A120-C-N-70
DSG-01-3C2-A120-C-N1-70
DSG-01-3C2-A120-N-70
DSG-01-3C2-A120-N1-70
DSG-01-3C2-A120-P-N-70
DSG-01-3C2-A200-70
DSG-01-3C2-A200-N-70
DSG-01-3C2-A240-70
DSG-01-3C2-A240-N-70
DSG-01-3C2-A240-N1-70
DSG-01-3C2-D100-70
DSG-01-3C2-D100-N-70
DSG-01-3C2-D12-70
DSG-01-3C2-D12-C-70
DSG-01-3C2-D12-C-N-70
DSG-01-3C2-D12-D-70
DSG-01-3C2-D12-D1-70
DSG-01-3C2-D12-N-70
DSG-01-3C2-D12-N1-70
DSG-01-3C2-D12-P-70
DSG-01-3C2-D12-P-N-70
DSG-01-3C2-D24-70
DSG-01-3C2-D24-C-N-70
DSG-01-3C2-D24-C-N1-70
DSG-01-3C2-D24-D-70
DSG-01-3C2-D24-N-70
DSG-01-3C2-D24-N-P-70
DSG-01-3C2-D24-N1-70
DSG-01-3C2-D24-N1-P-70
DSG-01-3C2-D48-70
DSG-01-3C2-D48-C-70
DSG-01-3C2-D48-C-N-70
DSG-01-3C2-D48-N-70
DSG-01-3C2-R100-70
DSG-01-3C2-R100-N-70
DSG-01-3C2-0-N-70
DSG-01-3C2-0-N1-70
DSG-01-3C3-A100-70
DSG-01-3C3-A100-N-70
DSG-01-3C3-A100-N1-70
DSG-01-3C3-A120-70
DSG-01-3C3-A120-N-70
DSG-01-3C3-A120-N1-70
DSG-01-3C3-A200-70
DSG-01-3C3-A200-N-70
DSG-01-3C3-A240-70
DSG-01-3C3-A240-N-70
DSG-01-3C3-D110-70
DSG-01-3C3-D12-70
DSG-01-3C3-D12-C-N-70
DSG-01-3C3-D12-D-70
DSG-01-3C3-D12-D1-70
DSG-01-3C3-D12-N-70
DSG-01-3C3-D12-N1-70
DSG-01-3C3-D24-70
DSG-01-3C3-D24-D-70
DSG-01-3C3-D24-N-70
DSG-01-3C3-D24-N1-70
DSG-01-3C3-D24-P-N-70
DSG-01-3C3-D48-N-70
DSG-01-3C3-R100-70
DSG-01-3C4-A100-70
DSG-01-3C4-A100-C-N-70
DSG-01-3C4-A100-N-70
DSG-01-3C4-A100-N1-70
DSG-01-3C4-A100-P10-70
DSG-01-3C4-A120-70
DSG-01-3C4-A120-70-L
DSG-01-3C4-A120-C-70
DSG-01-3C4-A120-C-N-70
DSG-01-3C4-A120-C-N1-70
DSG-01-3C4-A120-N-70
DSG-01-3C4-A120-N1-70
DSG-01-3C4-A120-P-70
DSG-01-3C4-A120-P-N-70
DSG-01-3C4-A120-P8-70
DSG-01-3C4-A200-70
DSG-01-3C4-A200-N-70
DSG-01-3C4-A240-70
DSG-01-3C4-A240-C-N-70
DSG-01-3C4-A240-N-70
DSG-01-3C4-A240-N1-70
DSG-01-3C4-D100-70
DSG-01-3C4-D100-N1-70
DSG-01-3C4-D110-70
DSG-01-3C4-D12-70
DSG-01-3C4-D12-C-70
DSG-01-3C4-D12-C-D1-70
DSG-01-3C4-D12-C-N-70
DSG-01-3C4-D12-C-N1-70
DSG-01-3C4-D12-D-70
DSG-01-3C4-D12-D1-70
DSG-01-3C4-D12-N-70
DSG-01-3C4-D12-N1-70
DSG-01-3C4-D12-P-70
DSG-01-3C4-D12-P-N-70
DSG-01-3C4-D24-70
DSG-01-3C4-D24-C-70
DSG-01-3C4-D24-C-N-70
DSG-01-3C4-D24-D-70
DSG-01-3C4-D24-N-70
DSG-01-3C4-D24-N1-70
DSG-01-3C4-D24-P-70
DSG-01-3C4-D24-P-N-70
DSG-01-3C4-D48-N-70
DSG-01-3C4-D48-N1-70
DSG-01-3C4-R100-70
DSG-01-2D2-A100-70
DSG-01-2D2-A100-N-70
DSG-01-2D2-A100-N1-70
DSG-01-2D2-A120-70
DSG-01-2D2-A120-C-N1-70
DSG-01-2D2-A120-N-70
DSG-01-2D2-A120-N1-70
DSG-01-2D2-A200-70
DSG-01-2D2-A240-70
DSG-01-2D2-A240-N-70
DSG-01-2D2-D100-70
DSG-01-2D2-D100-N-70
DSG-01-2D2-D100-N1-70
DSG-01-2D2-D110-70
DSG-01-2D2-D12-70
DSG-01-2D2-D12-C-N-70
DSG-01-2D2-D12-D-70
DSG-01-2D2-D12-N-70
DSG-01-2D2-D12-N1-70
DSG-01-2D2-D24-70
DSG-01-2D2-D24-C-N-70
DSG-01-2D2-D24-D-70
DSG-01-2D2-D24-N-70
DSG-01-2D2-D24-N1-70
DSG-01-2D2-D110-N1-70
DSG-01-2D2-D48-N-70
DSG-01-2D2-D48-N1-70
DSG-01-2D2-R100-70
DSG-01-2D2-R100-N-70
……
天命之谓性,率性之谓道,修道之谓教。—— 《礼记·中庸》
YUKEN 油研 中国台湾油研
液压阀 方向控制阀 阀门
DSGL-01型电磁换向阀
型号列举
DSGL-01-2B2-A110-50
DSGL-01-3C4-D24-60
DSGL-01-3C4-A220-N1-60
DSGL-01-2B2-D24-50
DSGL-01-2B2-A110-N1-60
DSGL-01-2D2-A110-60
DSGL-01-3C2-A110-N1-60
DSGL-01-3C2-A110-50
DSGL-01-2B2-D24-N1-60
DSGL-01-2D2-D24-N1-60
DSGL-01-3C4-D24-N1-60
DSGL-01-3C2-A110-N1-60-50Hz
DSGL-01-2D2-A110-60T
DSGL-01-3C4-A110-N1-60-50HZ
DSGL-01-3C9-D24-60T
DSGL-01-3C9-A110-N1-60
DSGL-01-2B3-D24-60
DSGL-01-3C12-D24-N-60T
DSGL-01-3C12-A110-N-60
DSGL-01-3C10-D24-60
DSGL-01-2B2-A110-50
DSGL-01-3C4-D24-60
DSGL-01-3C4-A220-N1-60
DSGL-01-2B2-D24-50
DSGL-01-2B3-D24-60
DSGL-01-2B2-A110-N1-60
DSGL-01-2D2-A110-60
DSGL-01-3C2-A110-N1-60
DSGL-01-3C2-A110-50
DSGL-01-2B2-D24-N1-60
DSGL-01-2D2-D24-N1-60
DSGL-01-3C4-D24-N1-60

DSGS-01 带監視开关型电磁换向阀
DSGS-01-3C2-D24-SWP1C-50T
DSGS-01-3C4-D24-SWP1C-50T
DSGS-01-3C60-D24-SWP1C-50T
DSGS-01-3C12-D24-SWP1C-50T
DSGS-01-3C9-D24-SWP1C-50T
DSGS-01-3C3-D24-SWP1C-50T
DSGS-01-2D2-D24-SWP1C-50T
DSGS-01-3C40-D24-SWP1C-50T
DSGS-01-3C3-D24-SWP1C-50T
DSGS-01-2B2-D24-SWP1C-50T
DSGS-01-2B3-D24-SWP1C-50T
DSGS-01-2B8-D24-SWP1C-50T

DSGS-03 带監視开关型电磁换向阀
DSGS-03-3C2-D24-SWP1C-50T
DSGS-03-3C4-D24-SWP1C-50T
DSGS-03-3C60-D24-SWP1C-50T
DSGS-03-3C12-D24-SWP1C-50T
DSGS-03-3C9-D24-SWP1C-50T
DSGS-03-3C3-D24-SWP1C-50T
DSGS-03-2D2-D24-SWP1C-50T
DSGS-03-3C40-D24-SWP1C-50T
DSGS-03-3C3-D24-SWP1C-50T
DSGS-03-2B2-D24-SWP1C-50T
DSGS-03-2B3-D24-SWP1C-50T
DSGS-03-2B8-D24-SWP1C-50T
……
生而知之者寡矣;学而知之者众矣。—— 汉·荀悦《申鉴·杂言》



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