The results showed that the modified PET fiber had good spinnability when the molecular sieve content in fiber was 2% by mass fraction;
结果表明：当纤维中分子筛质量分数为2%时，改性PET纤维的可纺性较好；
A method of using metal probe for measuring the void fraction at any point in gas-liquid two-phase flow on Sieve tray is described.
用金属探针法测量塔板上气液两相流中某些点的含气率。
The paper available mapping of integral coefficient polynomial and rational number, obtain factorization from factorization of polynomial by the way of sieve in true fraction series.
通过研究多项式的系数来确定整系数多项式的有理根，进而得出整系数多项式的有理根的一个判定定理和根的存在定理。
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