汽轮机被广泛应用于人民生产、生活的许多方面，主要用作发电用的原动机，也可直接驱动各种泵、风机、压缩机和船舶螺旋桨等。
Turbine is widely used in production and many aspects of life, mainly for prime mover of power generation; it can also directly drive pumps, fans, compressors and other ship propeller.
气垫船动力系统增加了为气垫供气用的垫升风机，同时采用空气螺旋桨推进，整个动力系统设计复杂。
With lift fans for air supply and aerial propellers in propulsion simultaneity, the whole power system of Air-Cushion Vehicle becomes more complicated.
在螺旋桨式风机的静压曲线中存在着不稳定区域或断点。
There is always an unstable region or break in the static pressure curve of a propeller fan.
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