处于液态的叠氮酸是很危险的.Hydrazoic acid in liquid form is very dangerous.结果表明添加叠氮酸酯是一种提高硝胺改性双基推进剂燃速与能量的切实可行途径.The results show that PDADN can increase burning rate and energy of nitramine modified propellant....
1857年，孟德尔开始在修道院的菜园里用豌豆做实验。In 1857 Mendel started experimenting with peas in his monastery garden.为了打发等待的那几个小时，安在菜园里干些活。To kill the hours while she waited, Ann worked in the garden.家庭菜园里种满了新鲜蔬菜。The kitchen garden was full...
Malone sat down on the bottom of the bed.马隆在床脚坐下了。Lower the heat and allow the omelet to set on the bottom.关小火让煎蛋的下面凝固。The sunken sailing-boat was a glimmer of white on the bottom.沉没的帆船在海底闪烁着白光。...