名詞 piston:

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

1. All the apprentices rushed to help fit the piston.
   徒工們都跑過來幫助裝活塞。
2. The piston seems ok. Maybe something else is wrong.
   活塞似乎沒問題。可能別的什么東西壞了。
3. Get lathe No.9 set to turn the new piston.
   把九號車床調(diào)好來車這個新活塞。

pis.ton

n.（名詞）
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：一種可裝到更大的筒里且在液壓下移動的固體小筒或碟子，如在往復式發(fā)動機中，也可用于更換或壓縮液體，如在水泵和壓縮機上
Music A valve mechanism in brass instruments for altering the pitch.
【音樂】 活塞閥鍵：一種銅管樂器上調(diào)節(jié)音量的活塞閥鍵

來源：
French
法語
from Italian pistone, pestone [large pestle]
源自 意大利語 pistone, pestone [大杵]
from pestare [to pound, crush]
源自 pestare [搗，弄碎]
from Late Latin pist3re
源自 后期拉丁語 pist3re
frequentative of Latin ponsere, pons3re
拉丁語 ponsere的重復, pons3re