利用这些图就可方便地得到吸气管道内风机辐射声功率级和声压级的关系。
Finally figures of direction coefficient of sound pressure level are given out. Then using these figures the relationship between sound power level and sound pressure level radiated by a fan in...
利用该第一空气流入孔(31)和上述吸气箱的吸引力，在吸气管道(20)内产生旋流。
A cyclone flow generates in the blower duct (20) by the first air inflow hole (31) and the suction force of the blower box.
文中使用的计算程序通用性强。可用于任何矿用空压机设备吸气管道系统结构固有频率计算。
The computer program has common property, and can be used to calculate all of the structural inherent frequencies of the mining reciprocating air compressor equipment's suction pipe system.
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