Piston attenuator
[電] 活塞衰減器
?? 詞語組成解析
piston
['p?st?n]
n. <機>活塞;
n. 衰減器\\n[化] 衰減器; 弱化子
??? 情景例句
The weather's been very hot lately.
最近天氣總是很熱。
In the fall, the boys prune the trees.
在秋天，男孩們便修剪那些樹木。
It took me over half an hour to get rid of him.
我花了半個多小時才擺脫了他的糾纏。