bottom dead center

短语

[机] 下死点

释义与例句

n.
  1. 1.

    A position in the cycle of a piston engine wherein the piston is at the bottommost point in its stroke. In a four-stroke cycle, BDC occurs twice: at the end of the intake stroke and at the end of the power stroke.

    不可数 工程
  2. 2.

    The reference mark on a flywheel (and engine block) indicating that the engine is in this position, when aligned.

    不可数 工程