Controlling the teeth profile error induced by the variation of diameter of grinding wheel is a key problem in the process of grinding ZC1 worm.
控制由砂轮直径的变化所引起的蜗杆齿形误差，是磨削zc 1蜗杆过程中的关键问题。
Using these formulas, the ulterior ballistic performance variation of the gun in different wearing degree can be predicted by measuring the land diameter wear figure.
应用这些公式，可通过静态测量火炮内径改变量的方法确定不同磨损程度火炮的内弹道性能变化。
The variation of gas holdup with gas velocity, column diameter, solid concentration, static bed height and gas distributor was studied in slurry bubble columns with three different diameters.
用三种不同直径的浆态鼓泡塔研究气速、塔径、固相浓度、静止床层高度和气体分布器等对气含率的影响。
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