This unit group also includes machine operators who operate previously set up production welding, brazing and soldering equipment.
此单元组还包括操作预先组合好的生产焊接，钎焊和锡焊设备的机器操作员。
Join pipes using couplings, clamps, screws, bolts, cement or soldering, brazing and welding equipment.
使用联接器，夹子，螺钉，螺栓，水泥或焊接，钎焊和焊接设备连接管件。
Fins are attached to the plates by a mechanical fit, gluing, soldering, brazing, welding, or extrusion.
翅片靠机械配合、粘结、软焊、硬焊、焊接或挤压附着在板上。
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