自动调节气压卸荷导轨利用压缩空气支承部分导轨载荷，以降低导轨面上的正压力，从而降低摩擦力。
In the automatic regulating pneumatic unloading guideways the compressed air is used to support part of the guideway load in order to reduce the normal force on the guideways.
正象水能够支承船那样，空气也能够支承气球。
这顶计划是将船支承在低压空气垫或低压空气软垫上，低压空气周围围着较高气压空气幔。
It was the idea of supporting a craft on a pad, or cushion, of low - pressure air, ringed with a curtain of higher pressure air.
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