The system consists of two air vehicles and a ground control unit.
该系统包含两个飞行器和一个地面控制单元。
Mass per unit of volume in powder form, including the air trapped between the particles.
每单位体积粉末的质量，包括粒子之间的空气。
Another unit the power cord through the air switch is also very important.
另外机组电源线通过空气开关也是非常重要的。
Air motor drive unit with gear reducer.
空气马达与齿轮减速驱动装置。
Air source treatment unit, solenoid control element, actuation element and tube fitting.
气源处理元件、电磁控制元件、执行元件、管接头等。
The paper presents the development of intelligent control unit of DC air breaker.
本文介绍了一种新研制的直流空气断路器智能化测控单元。
Operation safety of the air separation unit is the key link in the production of oxygen, which is a risk source of most difficult to control.
空分装置的安全运行是工业制氧安全生产的关键环节，也是最难控制的危险源。
The treating measures have been adopted to maintain the operation of air separation unit.
采取相应的处理措施维持空分设备的运行；
Warm air blower fan, motor and by a combination of radiator joint unit.
暖风机是由通风机，电动机及散热器组合而成的联合机组。
Clear air (power) supply unit.
移去气源车或电源车。
The air conditioning unit is shown schematically on Page 2.
第二页上所示的是空调装置的简图。
Too hot because the rattling air conditioning unit was usually blowing out hot air.
很热是因为嗡嗡作响的空调通常只吹热风；
Discribe the operation of a rooftop package unit air conditioner.
说明屋顶空调机的操作方法。
Discribe the operation of a rooftop package unit air conditioner.
说明屋顶空调机的操作方法。
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