All skilled welding and fitting was done by regular employees.
全部技术性的焊接和装配活都由正式工人担任。
Knowledge of basic electrical, welding, cutting and fitting of pipes, principles of hydraulic and air operated equipment.
基础电气知识，电焊，切割，装配管道，熟悉液压和气动设备的基本原理。
There are affinity among the fitting welding line position, quality, cost, production, working intensity, and the simple and reliable welding technics insures the high quality of products.
合理的焊缝布置与产品的质量、成本、生产率以及工人的劳动强度等都有密切的关系，简便可靠的焊接工艺是获得优质产品的保证。
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