Li Caihui Solving method for development of back guide vane of the fan is introduced.
介绍了通风机后导叶展开的计算方法。
The only sound was a slight scraping noise from the rooftop, where the weather-vane swung back and forth.
整个谷仓里唯一的声音就是从屋顶传来的缕轻微的刮擦声，那儿有天气风向标在前后摆动。
Axial force is balanced by back vane or balanceable hole, for the specification with big radial force; we adopt double-wear passage design.
轴向力由副叶片或平衡孔平衡，对于径向力在的规格采取了双壳体设计；
The result obtained brings down the big loss resulting from an excess of noise along with emergency repares back to the factory. This also enables the vane pump to find a good market.
此项研究成果使该泵减少了因噪声超标而造成大量返修所引起的巨额损失，从而在市场上重新站稳了脚跟。
The double attraction centrifugal pump consists of rotation shaft, pump body, pump cover, and double attraction vane wheel comprising two back-to-back installed vane wheels.
它包括转轴、泵体、泵盖，两个叶轮背靠背地安装在一起，构成双吸叶轮；
The double attraction centrifugal pump consists of rotation shaft, pump body, pump cover, and double attraction vane wheel comprising two back-to-back installed vane wheels.
它包括转轴、泵体、泵盖，两个叶轮背靠背地安装在一起，构成双吸叶轮；
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