However, spiraling costs forced the Air force to cancel the entire program.
然而，由于成本问题迫使空军取消了整个计划。
The cab is also equipped with forced air cab heaters and a windshield defogger.
司机室同样配备强制通风司机室加热器与挡风板除雾器。
People are forced to wear the mask to avoid breathing poisonous air.
人们被迫戴着面具，避免呼吸有毒空气。
When forward motion is imparted to it from an external source, air is forced.
当由外部能源强迫其向前运动时，空气被迫进入进气道。
Acording to air supply mode, the device has forced air supply and natural air supply.
根据供风方式，该装置有强制送风和自然送风两种。
This increases the initial primary air fan size and reduces the forced draft fan sizes.
这会增加一次风机的尺寸而减小从动风扇的尺寸。
This increases the initial primary air fan size and reduces the forced draft fan sizes.
这会增加一次风机的尺寸而减小从动风扇的尺寸。
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