阐述了双头涡旋型线几何结构参数及其修正的必要性。

Then expatiate the geometry structure parameter and the ponderance of modification wrap.

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以插装型液压锥阀为研究对象，研究了几何结构参数及边界条件对锥阀流场及气穴现象的影响。

The hydraulic cartridge cone valve is chosen for the study of possibility to explore its effects of geometry parameters and boundary condition on flow field and cavitation of cone valve.

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绉效应系数，被定义为表面几何结构参数，即纬线的波高、纬密和纬线单位长度中的半波数的乘积。

Crepe effect coefficient is defined as the product of the surface geometric structural parameters, i. e, amplitude of weft, density of weft, and number of wefts in unit length.

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