PP-B 嵌段共聚聚丙烯管 ; 嵌段共聚聚丙烯
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Jacobs, Allan B. "Making Great Streets. " Chap. 4 in Great Streets. Cambridge, MA: MIT Press, 1993, pp. 269-308.
著，《美丽街道》第四章〈创造好的街道〉，麻州，剑桥：麻省理工学院出版，1993年，第269-308页。
This paper studied the structure and properties of propylene-ethylene block copolymer (PP-B) as speciality resin for tubing.
研究了乙丙嵌段共聚聚丙烯(PP - B)管材专用树脂的结构与性能。
For Group B, the vitalight lamp radiation and steaming of methanal plus PP were used in combined air sterilization.
紫外线灯照射与甲醛加PP熏蒸联合空气消毒为B组。
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