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...
Ari Hart recently received the accolade of being represented in the Museum of Modern Art.阿里·哈特的作品最近有幸获选在现代艺术馆展出。To evaluate the implementation of National ARI Control Programme.评估全国ARI控制规划的执行情况.Objective To study the pra...
承压含水层又叫压力含水层.A confined aquifer is also known as a pressure aquifer.非承压含水层是两种主要含水层之一.One of the two main types of aquifer is the unconfined aquifer.这样的介质能把水控制在承压含水层中.Such material can confine water in an artesian aquifer...