Microporous polypropylene hollow fibrous membranes may be prepared by the melt spinning and cold stretching (MSCS) or thermally induced phase separation (TIPS) method.

对熔融纺丝-冷却拉伸与热致相分离两种制备微孔聚丙烯中空纤维膜的意义、原理、过程、影响因素等进行了评述。

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It is shown that the relative concentration of melt structure unit varies abruptly in some extent across the phase border.

熔体结构单元相对含量，在相界线两侧有某种程度的突变。

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Recently, phase change or "hot melt" ink jet technology has been an emerging offshoot of the ink jet industry in recent years.

近十多年来，相变或热熔喷墨打印技术在迅猛发展的喷墨打印领域里逐渐崭露头角。

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