打轴(spooling)是在钢丝绳生产中将制绳钢丝按工艺要求缠绕到工字轮上供捻股使用的一道工序，又称卷线。打轴后装有钢丝的工字轮称为线轴或线轮，未装钢丝的工字轮称为空轴或空轮。
在艉轴管前后分别用激光粗打镗孔余量的分布情况。
Respectively lase both sides of the stern tube in order to measure the boring dimensions roughly.
专门从事打头机、搓丝机、打钉机、割槽机、割脚机、空心钉机和玩具轴类机械的生产。
The Machinery Factory is specialized in the production of Heading Machine, Thread Rolling Machine, Nail Making Machine, Slotting Machine, End Cutting Machine and Axial Machinery for toys.
在用1772仿形车床车削变速器第二轴时，常发生打刀现象。
When the output shafts of the gear-boxes were turned on the copying lathe model 1772, the cutting tool often broke.
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