棘

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。

At exploratory surgical operations, however, the unopened hydatid cyst should be excised.

然而， 在探查性外科手术时， 就应该把未开放的棘球蚴切除掉。

Additional studies on culturability of the organism have yielded important information.

此外关于细粒棘球绦虫培养力的研究，已经取得了一些重要的成果。

Yet scolytids do not normally attack healthy trees.

事实上，棘胫小蠹是不危害健康树的。

Objective : To investigate the clinical feature of obese acanthosis nigricans.

目的： 探讨肥胖性黑棘皮病的临床特点。