BUNa - N is a general purpose oil resistant polymer known as nitrile rubber.丁腈橡胶(BUNa-N )是一种多用途抗油品腐蚀聚合物,称为腈橡胶.Buna - N disc valves limited to 180 H temperatures.丁腈橡胶阀瓣阀门的温度限制在180℉以下.Ten thousand desperate fighting men, t...
The islands lie at the southern end of the Kurile chain.这些岛屿位于千岛群岛的南端。Yemen commands the strait at the southern end of the Red Sea.也门完全控制着红海南端的海峡。Antarctic air brought biting cold to southern Chile on Thursday.周四，南极气流给智利...