Salt pump is one of the key units in tube extracting equipment.

盐泵是管道化溶出装置的关键设备之一。

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The flying sawing machine is one of the key units of the straight welded pipe production line.

飞锯是直缝焊管生产线上的关键设备之一。

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The simulation operation analyses of the key units of the system provide a good basis for further design and improvment.

对各关键单元进行的模拟操作分析，为该系统的优化计算和改进现行操作工况提供了较好的依据。

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To help protect the support units, leaders will designate ground and air tactical units to watch key areas.

CNN: Grange: Iraqis fight with 'economy of force'

The company said the turnaround was because of innovations in key business units.

BBC: South Korea LG Electronics turns to profit in 2012

And it's taken a while for the Army's personnel system, the Army's officer corps to really understand how fundamental this shift is, that the key to success is no longer exclusively American combat units well trained and well led, but is now increasingly Iraqi Security Forces well trained and well led.

NPR: U.S. Turns More Attention to Training Iraqi Forces