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1·The optimal weight fraction is 0.1%, for under this condition, the wear scar diameter is decreased 35.6% and lubricating oil has great time-release effect.

当铜镍复合粉体的质量分数达到0.1%时，磨斑直径降低幅度最大，达35.6%，并具有很好的长效减摩性能。

2·The effect of the end group on the weight fraction of the individual mono-disperse species both for the experimental UV response data and the theoretical distribution function was discussed.

讨论了端基对实验的紫外吸收响应以及理论的链长分布函数中各个半分散组分重量分数的影响。

3·Today you can get an iPod nano for $179 that’s a fraction of the original iPod’s size and weight, with double the storage, a color display, video playback, and a built-in video camera.

今天你可以只花179美元就能得到一个iPod nano，今天的产品只是最初的iPod大小和重量的一小部分，但是会有最初的两倍的存储容量，彩色的显示屏，能录放而且还有一个内置的摄像头。

4·The perceptron training rule is based on the idea that weight modification is best determined by some fraction of the difference between target and output.

感知器培训规则是基于这样一种思路—权系数的调整是由目标和输出的差分方程表达式决定。

5·There are many, but one plausible rule is based on the idea that weight and threshold modification should be determined by a fraction of (t - y).

有很多，不过有一条似乎合理的规则是基于这样一种思想，即权系数和阈值的调整应该由分式(t - y)确定。

6·The effect of the radiation condition on the gel fraction, crosslinking regulation, and the network molecular weight were studied.

本文研究了辐射条件对硫化硅橡胶的凝胶分数、交联规律和交联网格分子量的影响。

7·The fraction with smaller molecular weight, molecular weight distribution and lower content of short chain branching could form thinner and more uniform laminar crystals.

较低摩尔质量且支化度小的窄摩尔质量分布级分具有较完善、分布更加均匀的薄片晶结构。

8·The plots of TB as a function of fraction of sucrose passed through a maximum at 1:1 weight ratio of sucrose to protein.

情节结核病作为一个功能部分蔗糖通过最高重量比在1：1蔗糖蛋白质。

9·When the PEO molecular weight increased, the gel fraction, the degree of swelling and the hardness of the PEO hydrogel films increased obviously as well.

当PEO分子量增加时，其水凝胶膜的凝胶分数、膨胀度和硬度亦明显增加。

10·Themolecular weight range of FCD is 42000 and 95000, and fraction of SFPS is 3500-10000, which can pass the cell membrane freely.

FCD的分子量段为42000和95000，SFPS经分离还可得到分子量段为3500～10000的组分，该组分在生物细胞膜间的穿透能力强。