介绍了以高硬度的M2B硼化物为耐磨骨架的新型铁基 耐磨 材料FCB合金.This paper presents a new type of Fe - base wear - resistant materials - FCB alloys.硼化物系列主要产品有: 硼酸 、 硼砂等.Boride series of main products: boric acid, borax, and so on.硼及其硼化物在现代工业中有着广阔的应...
The borough is twinned with Kasel in Germany.该自治市与德国的卡瑟尔市结成了友好城市。Oxford is twinned with Bonn in Germany.牛津和德国的波恩结成了友好城市。Five Polish banks are to be twinned with counterparts in Western Europe...5 家波兰银行将和 5 家西欧银行结为姐妹银行。Fi...
所加的反应物可以是二烯烃 、 环二烯烃.The feed reactants can be alkadienes, cycloalkadienes.包含两个双键的化合物叫做二烯烃.Compounds containing two double bonds are called dienes.与二烯烃橡胶相比, EPDM的双键很少.Compared with diolefine rubber, EPDM has less double b...