Tsunami is an unfamiliar kind of phenomenon to us.海啸对我们来说是个陌生的现象.May 22 , 1960, the Chilean sea tsunami waves of 25 meters.1960年5月22日, 智利海域发生海啸,浪高25米.People plan to carve a stone to memorialize the tsunami victims.海啸之后,人...
牌子是由纵向和横向的线条构成的。The board consists of vertical and horizontal lines.竖井已经打下，并且挖有横向矿道。Shafts were sunk, with tunnels dug laterally.通常1/50的横向坡度就已足够.A cross slope of one in fifty is usually enough....
The hydrogenation of diene compound and carbonyl group with yeasts was studied.对几种酵母细胞催化双烯和羰基的加氢反应作了一些初步研究.EPDM is a terpolymer elastomer made from ethylene - propylene diene monomer.epdm是一种由乙烯 - 丙烯、二烯单聚物构成的三元共聚物弹性材料.Eth...