往复

• Oil - free reciprocating piston air compressors
  全无油润滑往复活塞空气压缩机
• Reciprocating internal combustion engines - graphical symbols
  往复式内燃机.图形符号
• Improvement for structure of reciprocating pump valve
  往复处泵泵阀结构改进
• Anti - vibration design of compressor piping system
  往复式压缩机管线减振设计
• The failure analysis of the valve in reciprocating pump
  往复泵泵阀失效分析
• Classification and vocabulary for reciprocating pump
  往复泵分类和名词术语
• Design and study about valve of reciprocating pump
  高压往复泵泵阀设计研究
• Banlance of two - stage reciprocating inertial force
  4105柴油机二阶往复惯性力的计算分析
• Look , um , i ' m really tired , going back and forth
  看，嗯，这样的往复来回我真的疲惫了
• Piston rings for reciprocating hydraulic cylinders
  往复式液压气缸用活塞环