A provincial gas fitter licence, or gas appliance technician certificate, may be required for gas appliance service technicians.
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19. 装置在工作台上，用以夹稳加工工件，为钳工车间必备工具。
It is installed on the work stations to clamp the workpieces. It is an necessary tool in the schlosserei.
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20. 划线时，通常使用游标卡尺、钳工划线盘、钢直尺等常用工具。
It normally used vernier caliper, fitter disc, steel ruler, and other frequently used tools.
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21. 这个钳工水平仪（框架式水平仪）的精度为0.02毫米/米。
The precision of this fitter level (crosstest level) is 0.02mm/M.
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22. 当司钻正在上卸钻杆和钻铤时，内外钳工不要站在两个大钳之间。
Lead and backup tong-men should not stand between the two pipe tongs while the driller is making up or breaking out pipe or collars.
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23. 公务员和英国航空公司机务人员已经加入其中，管工和天然气钳工也被推选出来。
Civil servants and British Airways cabin crew have walked out. Tube-workers and gas-fitters have been balloted.
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24. 锯钳工根据规格维修，安装并锐化乐队锯，链锯，圆锯和其他类型锯片。
Saw fitters repair, set and sharpen band saws, chain saws, circular saws and other types of saw blades according to specifications.
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25. 为在我国全面推广硬质合金旋转刀具，实现钳工、雕刻机械化做出应有的贡献。
For in our comprehensive promotion carbide rotating knives, realize fitter, carving mechanization makes a due contribution.
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26. 利用小直径麻花钻，改磨成“排孔钻”，并运用于技工学校的钳工专业技能培。
Make use of small diameter twist drill to change it into drill of wearing intersect holes and put it into the ability education of locksmith.
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27. 在工程训练教学中，钳工是一门传统的加工工艺，它具有操作机动、灵活的特点。
In engineering training instruction, the fitter is a traditional process, and it has mobile operating and flexible features.
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28. 金工实习的重要性和内容简介，其中主要介绍钳工工艺特点和操作能力指标测评。
And it mainly introduces the special features of locksmith technology and how to evaluate the practice ability, the important position and development of locksmith in mechanical engineering.
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29. 钳工的大部分工作都是在台钳上完成的，比如锯，锉，錾，以及零件的装配和拆卸。
Most work of fitter are finished on the bench vice. For example the saw, the file, the chisel and components installing and dismantling.
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30. 高级：热力司沪工、化工仪表维修工、化工检修钳工、化工检修电工、化工维修焊工。
High: Heat Division Shanghai engineering, chemical instrumentation bunkers, chemical equipment fitter, chemical overhaul electrician and chemical maintenance welder.
