时间:2022-10-30 20:12:38
n.
【化学】(德国制)布纳(橡胶),丁(二烯)钠(聚)橡胶。
made by polymerizing butadiene
同义词:buna rubber,
Ten thousand desperate fighting men, with their backs to the sea, held the final perimeter at buna .
一万名殊死抵抗的士兵,背海作战,在布纳守住了最后一道防线。
Nitrile rubber buna n
丁晴橡胶
Buna - n rubber
丁晴橡胶
G . przewalskii migrates to rivers for reproduction from may to august , and the main reproduction sites are the three rivers of shaliu river , buna river and heima river
青海湖裸鲤在5 8月洄游到河流中繁殖,沙柳河、布哈河和黑马河3条河流为其主要产卵场。