A lot of research need do because it is difficult to resolve the problem of uneven dispensability of nano-particles in polymer.
但如何解决纳米粒子在高分子基体中难以均匀分散的问题，仍需要做大量的研究工作。
The book coachs variously on market now a lot of, quality discretion is uneven.
现在市面上各种各样的辅导书很多，质量高低参差不齐。
There's been a lot of handwringing lately over grade inflation, and it is a scandal, but the most scandalous thing about it is how uneven it's been.
最近有很多文章谈到分数膨胀的问题，这是丑闻，但是最丑陋的地方在于它是多么地不平衡。
Based on a lot of studies and practice, the manufacturing process and construction methods, especially the method of solving the uneven heat is greatly improved and a good result has been achieved.
笔者经过学习和实践，对制造工艺和施工方法尤其受热大进行了改进，并收到了良好的效果。
Based on a lot of studies and practice, the manufacturing process and construction methods, especially the method of solving the uneven heat is greatly improved and a good result has been achieved.
笔者经过学习和实践，对制造工艺和施工方法尤其受热大进行了改进，并收到了良好的效果。
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