Using calcium chloridize and sodium phosphate dibasic, this paper synthesizes hydroxyapatite having hexagonal system at 40 ℃. 本文以氯化钙和磷酸氢二钠为原料,在40℃温度下合成了具有六方晶系的羟基磷灰石.
"It's in here somewhere," he said, rooting about in his desk.“它就在这里的什么地方，”他一边说，一边在桌子里乱翻。The rooting medium should be moist, well aerated, and sterile.生根的基质应当是湿润, 透气良好和消过毒的.Charcoal prevents browning of tissues and s...
The organisers set off across London, seeking any open - topped vehicle to commandeer.组织者纷纷出动遍寻伦敦, 征募任何趟篷交通工具.The organisers were given a breakdown of the costs.向组织者提供了一份开支细目。It is an important moment, crowning the effor...
People may roll their eyes and talk about overprotective, interfering grandmothers.人们可能会翻着白眼谈论那些溺爱儿孙、样样都要插手的祖母。My grandmothers are both widows.我奶奶和外婆都是孤寡一人。Their mothers and grandmothers were perhaps a little more delibe...
蝌蚪蜕变了，登上陆地。The tadpoles metamorphose and emerge onto land.毛毛虫最终将蜕变成一只蝴蝶。The caterpillar will eventually metamorphose into a butterfly.从毛毛虫到蝴蝶的蜕变the metamorphosis of a caterpillar into a butterfly...
MgO改性提高对二乙苯选择性最为明显.Silylation, P modification and MgO modification can improve p - DEB selectivity greatly.指出高效、节能的分子筛吸附分离法是分离二乙苯的最佳选择.The best choice for separating diethylbenzene is the adsorptive separation by zeolite...
The Parachute Regiment could be forced to admit women.伞兵团可能会被迫招收女性。He plunged 300ft to the ground when his parachute collapsed.降落伞突然瘪了，他从300英尺的高空跌落到地面。He was almost strangled by his parachute harness straps.他差点被自己的降落伞吊带勒...