piston
n
1 round plate or short cylinder,usu made of metal or wood, that fits closely inside another cylinder or tube and moves up and down or backwards and forwards inside it; used eg in steam or internal combustion engines to cause other parts to move by means of a connecting rod (`piston-rod) 活塞. =>illus 见插图.
2 sliding valve in a trumpet or other brass wind instrument (铜管乐器上的)活门.
🔁 扩展释义
*['pistәn]n. 活塞, 活塞阀键【医】 活塞(如注射器的)
🏥 医学释义
活塞,柱塞
🌿 同词根单词
pipen. 管子;烟斗;管乐器;(管风琴的)音管;
vt. 以管输送;用管乐器演奏;尖声唱;
vi. 吹奏管乐器;尖叫;尖声地说(或唱),尖声啼鸣;[航海] 吹长哨;