The conventional method involves boiling and then distilling water. An alternative works by reverse osmosis, in which water is forced through a semi-permeable membrane.
传统技术用的是蒸馏，新兴的替代技术是通过迫使咸水通过一个反渗透薄膜以达到过滤。
Illustrated the uncovered polyurethane fiber as an example, the popular detecting points for semi products are given, such as the shrinkage in boiling water and elastic recovery.
以氨纶裸丝为例，介绍了氨纶织物半成品的检测要点，即目前常用的沸水收缩率和弹性回复率。
Illustrated the uncovered polyurethane fiber as an example, the popular detecting points for semi products are given, such as the shrinkage in boiling water and elastic recovery.
以氨纶裸丝为例，介绍了氨纶织物半成品的检测要点，即目前常用的沸水收缩率和弹性回复率。
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