In order to improve the mechanical properties of the para - aramid paper polyimideresin.对位芳纶纸基材料分子结构的刚性及纤维表面的惰性导致其机械力学性能较低.The sisal pulp and aramid fiber were chose to fabricate the wet paper - base friction materials.本...
这种清漆可作耐久的罩面漆.This varnish provides a durable finish.许先生说: “ 不怕的, 最耐久! ”" No , it is not ,'said Mrs. Lu Xun. " It's a very tough plant. "然后再加干性油,以得到耐久的, 精修的表面.Then a drying oil is applied to give apermanent, dec...
Others are associated with the protoplasm of the cell.其它一些与细胞的细胞质有关.Each cell possesses a nucleus imbedded in protoplasm.每个细胞都具有核,细胞核位于原生质中.This release of the products of cellular protoplasm to the extracellular fluid a...
The obverse of rising unemployment is continued gains in productivity.失业率上升，相对应的是生产率进一步提高。The obverse of love is hate.爱的反面是恨。We should see the reverse as well as the obverse of things.我们不但应该看到事物的正面,也要看到事物的反面....