The polar equation of non-circular gear pitch curve, calculation method of center distance, formula of pitch curve length, primary circle radius and pressure Angle is given.
This work has tried to apply the scaled particle theory to polar solute system, and drived a formula of salting-out constant for polar nonelectrolyte.
本文将定标粒子理论应用于极性溶质，推导出一个求极性溶质的盐效应常数表达式。
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Using polar coordinate system to set out, the coordinate computing formula and the error of its approximate formula are discussed of any point in line.