pistons

核心释义

a solid disk or cylinder that fits inside a hollow cylinder and moves under pressure, as in an engine or pump

1. 1.

   一种实心圆盘或圆柱体,紧密配合在空心圆柱内,在压力下运动(如发动机中)或排挤流体(如泵中)。

   A solid disk or cylinder that fits inside a hollow cylinder, and moves under pressure (as in an engine) or displaces fluid (as in a pump)

2. 2.

   美国新古典主义作曲家(1894-1976)

   United States neoclassical composer (1894-1976)

3. 3.

   某些铜管乐器中用于改变音高的阀装置。

   A valve device in some brass instruments for changing the pitch

4. 4.

   具有柱塞或推力运动的机械装置

   mechanical device that has a plunging or thrusting motion

（铜管乐器的）活塞阀键；柱塞；往复运动部件；皮斯顿（美国新古典主义作曲家，1894—1976）；一种实心圆盘或圆柱体,紧密配合在空心圆柱内,在压力下运动(如发动机中)或排挤流体(如泵中)。；美国新古典主义作曲家(1894-1976)