丙烯腈和二乙烯基苯在聚丙烯上接校共聚,再经二甲苯率取,得笼形氰基树脂。
Acrylonitrile copolymerized with divinylbenzene on polypropylene and then extracted with xylene, the cage cyano resin was obtained.
本文报道了作者于1976、1979年在巴里坤草原自然和罩笼条件下,观察优势种蝗虫取食范围、取食程度等研究结果。
The feeding habits of six dominant species of Catantopinae, Acridinae and Oedipodinae of Acrididae were studied in 1976 and 1979 in Barkol grassland, Xinjiang Uygur Autonomous Region.
随机取健康雄性大鼠分别与各组雌性大鼠合笼,比较生育仔鼠数量和存活率。
The male Wistar rats cohabited with the female ones to test the quantity and the survival rate of their offspring.
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