Jones reducer
[化] 琼斯还原管
🧩 词语组成解析
jones
[[dʒəunz]]
n. 琼斯（姓氏）
n. 渐缩管, 缩减者, 还原剂\\n[化] 变径段; 变径管; 异径管; 大小头; 还原剂; 减速器; 减振器; 节流器
🗣️ 情景例句
Robbie! Who is it? Robbie
是谁呀？
I've made a reservation at the hotel you used last time.
我已预订了你上次住过的旅馆。
There was also a great deal of machinery on display.
参展的还有很多机器，