Shoulder-fired weapons, classified as anti-tank or anti-aircraft, use a launcher to fire a warhead at a target. The projectile fired includes guided as well as unguided missiles and grenades. Unlike other missile systems, which tend to be bulky and require operational expertise, shoulder-fired weapons are small enough to be carried by a single person and can be operated easily without much training.

关键词：肩射武器；反坦克；防空；发射器；发射弹丸

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Brazing is defined as the process of joining two metals by deploying a filler metal such as a brazing alloy. In the brazing process, the filler metal is heated to slightly above its melting point and allowed to flow through capillary action between the two base metals that need to be joined.

关键词：焊料；填充金属；焊锡

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Electrical motors and actuators are an integral part of the Process Equipment industry, and are employed in pumps, compressors, and valves in order to drive and control the flow of the medium throughout the process line.

关键词：电动马达；工艺设备行业；泵；压缩机；阀门；驱动；控制

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