Expanding mandrel
[机] 胀缩心轴
🧩 词语组成解析
expanding
[iks'pændiŋ]
adj. 展开的，扩大的;
v. 使…变大( expand的现在分词 );扩大;伸展;伸开;
n. 心轴\\n[医] 轴柄
🗣️ 情景例句
When was the last time?
最近一次是什么时候？
To sink
沉下
As quickly as she could,Miss Zhou got a medicine box.
赵小姐忙取来药箱。