zero variation

基本解释

Actual pitch variation between any two adjacent teeth. In the ideal case, the pitch variation error will be zero.
两个相邻的齿之间实际的周节变动。在理想的情况下，周节变动误差是。
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In this paper, after detailed study of the variation of zero-sequence currents during arcing fault, the disadvantageous effects of arcing on the accuracy of fault line selection are listed.
文中在充分研究电弧故障暂态零序电流变化的基础上，指出电弧因素对故障选线准确性的影响。
The result of analysis about CV (coefficient of variation) in R_1 generation suggested that variation in zero point for 1st branches was the highest, and it's frequency of variation was 44.54%;
茎尖途径形成的再生植株R_1代变异系数分析发现：在一次有效枝起点上表现出的差异最大，变异频率为44.54%；

But Cochrane finds that cash flow variation accounts for approximately zero percent of market variation.
FORBES: John Cochrane's Unpleasant Fiscal Arithmetic