piston

名词 piston:

1. United States neoclassical composer (1894-1976)
   同义词：Walter Piston
2. mechanical device that has a plunging or thrusting motion
   同义词：plunger

1. All the apprentices rushed to help fit the piston.
   徒工们都跑过来帮助装活塞。
2. The piston seems ok. Maybe something else is wrong.
   活塞似乎没问题。可能别的什么东西坏了。
3. Get lathe No.9 set to turn the new piston.
   把九号车床调好来车这个新活塞。

pis.ton

n.（名词）
A solid cylinder or disk that fits snugly into a larger cylinder and moves under fluid pressure, as in a reciprocating engine, or displaces or compresses fluids, as in pumps and compressors.
活塞：一种可装到更大的筒里且在液压下移动的固体小筒或碟子，如在往复式发动机中，也可用于更换或压缩液体，如在水泵和压缩机上
Music A valve mechanism in brass instruments for altering the pitch.
【音乐】 活塞阀键：一种铜管乐器上调节音量的活塞阀键

来源：
French
法语
from Italian pistone, pestone [large pestle]
源自 意大利语 pistone, pestone [大杵]
from pestare [to pound, crush]
源自 pestare [捣，弄碎]
from Late Latin pist3re
源自 后期拉丁语 pist3re
frequentative of Latin ponsere, pons3re
拉丁语 ponsere的重复, pons3re