在已知空间物体表面区域方程的前提下，利用黎曼和可以方便地求出被测物体的体积。
It is very convenient to calculate the object volume to use Riemann sum after obtained the object surface region equation.
幸好，正确的切割速度可以根据刀具寿命表或者刀具寿命泰勒方程估算出来，并有一定的合理精度，如果在必要的数据都具备的前提下。
Fortunately, the correct cutting speed can be estimated with reasonable accuracy from tool-life graphs or from the Taylor tool life Relationship, provided that necessary data are obtainable.
摘要在托马假定前提下，从调压室基本方程入手，推导复杂尾水系统的尾水调压室稳定断面计算公式，并通过工程实例进行验证。
Based on thoma supposition and basic equations of surge tank, a few formulas were proposed for the stable sectional area of tailrace surge tank on complicated tailrace system.
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