In addition, the CAD system includes some more utility modules, such as module of gear calculation of error of gear profile, module of gear measurement, module of looking up nation standard of gear.
另外，在齿轮CAD系统中还设计了齿廓误差计算、齿轮测绘及齿轮国家标准查询等一些具有较大实用价值的模块。
According to error analysis of sound level measurement and practical case some objection was raised to levy standard on Noise Exceeding Environment standard.
依据声级测量的误差分析，结合实例，对国家现行《超标环境噪声排污费征收标准》提出异议。
The result shows that measurement standard error reaches minimum 0.027 for most milk sample and satisfies the national criterion of protein detection when dilution ratio ranges from 6.2 to 7.4.
结果表明，对于大多数的牛乳样品，当其稀释倍率在6.2至7.4范围内时，测量标准偏差达到最小值0.027，满足蛋白质检测国家标准。
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