当前学科:船舶动力装置
  • 题目: 单选
    In diesel engines designed with a crosshead, the motion of the piston rod can be described as ().

      A . reciprocating at the piston pin, rotary at the crank pin
      B . reciprocating at the crank pin, rotary at the piston pin
      C . straight reciprocation
      D . straight rotatio

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