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1)  size variance
纤度方差
1.
It is discussed about the approximate relationship between silk reeling velocity and rawsilk size variance, and drawn the conclusion that the velocity doesn't affect the size deviationbasically under present reeling velocity.
研讨了缫丝速度与生丝纤度方差的近似关系,得出了在目前采用的缫丝速度下,缫丝速度对生丝纤度偏差成绩基本不受影响的结论。
2)  Mean square deviation of size
纤度均方差
3)  size deviation
纤度偏差
1.
It is discussed about the approximate relationship between silk reeling velocity and rawsilk size variance, and drawn the conclusion that the velocity doesn't affect the size deviationbasically under present reeling velocity.
研讨了缫丝速度与生丝纤度方差的近似关系,得出了在目前采用的缫丝速度下,缫丝速度对生丝纤度偏差成绩基本不受影响的结论。
2.
On the basis of the theory of raw silk size deviation, investigations are conducted on the size deviation records and fluctuation in the inspection of raw silk after being shortened in its length from 400 turns to 100 turns,with discussions made on determining threshold value of the corresponding grade and quantity of sample silk to be tested.
基于生丝纤度偏差理论, 考察生丝纤度偏差检验丝长从400 回缩短为100 回时纤度偏差成绩及其波动状况; 讨论与此相关的等级界限值设定及检验样丝数量等问题; 提出改变检验丝长后划分纤度偏差等级的方法。
3.
random end feeding, proportional cocoon matching and layer-based cocoon matching, upon the size deviation of raw silk.
分析了随机添绪、比例配茧、塔形配茧三种配茧方式对生丝纤度偏差影响的程度和趋势。
4)  optical fiber length difference
光纤长度差
5)  size uniformity range
纤度开差(丝)
6)  Concentration variance
浓度方差
补充资料:并合方差
分子式:
CAS号:

性质:是按加权方式计算出的各组的共同方差,当试验分m组进行,总的测定方差s2由m组的方差si2(i=1,2, …,m)共同决定。总方差,式中ni、fi和xi;分别为第i组的测定次数、自由度和平均值,xij是第i组的第j次测定值。

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