spool造句

A ratchet mechanism transfers the thread from spool to bobbin.
一种棘齿装置把线从线轴转到梭心上。

On dictation equipment, a spool on which magnetic tape is wound.
在口述记录设备上, 一种卷绕磁带的轴.

a spool of cotton
一轴棉线

a spool of thread
一轴线

• #spool