Injection piston
[化] 注射柱塞
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
🗣️ 情景例句
That's true. Harry Bennett,certified public accountant.
是的。Harry Bennett注册会计师。
I'm going to take four boxes.
我要拿四盒。
George showed me to the guestroom which, he said, was rarely used.
乔治把我领进客房，说这间很少使用。