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 1714| 12
 
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逻辑阀 | 
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 点评
看起来是这样 
 
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 点评
22这是减压阀,R口应该还有一个背压阀(定值)或者溢流阀,维持压力 
 
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 1714| 12
 
 | 
逻辑阀 | 
| 
 | 
  | |
| 
 | 
  | |
| 
 | 
  | |
| 
 | 
  | |
| 
 | 
 点评
看起来是这样 
 
 | |
| 
 | 
 点评
22这是减压阀,R口应该还有一个背压阀(定值)或者溢流阀,维持压力 
 
 | |
| 
 | 
  | |
| 
 | 
  | |