Tappet
n. 梃杆, 凸轮从动件\\n[机] 挺杆
📖 牛津释义
tappet
n
projection in a piece of machinery that causes a certain movement by tapping against sth, used eg to open and close a valve 挺杆.
🗣️ 情景例句
Does this car have good fuel economy?
这种车省油吗？
Excuse me? I didn't hear what you said.
对不起，我没有听清你说的话。
They come in cases of five.
它们是五个一箱。