Objective To synthesize raloxifene hydrochloride, which is a selective estrogen receptor modulator.目的合成选择性雌激素受体调节剂盐酸雷洛昔芬.A laser and electroabsorption modulator ( EAM ) are monolithically integrated through an etched fac...
Once its impurities had settled, the oil could be graded.一旦杂质沉淀下去，油就可以分级了。Passes are graded from "A" down to "E".及格分为A到E几等。The texts should be graded in order of difficulty.课文要按难易程度编排....
But the general commercial satellite has the mature astronautics insurance.而一般的商业卫星则有成熟的航天保险.Beijing astronautics flight control center erupts a warm applause at once.北京航天飞行控制中心旋即爆发出一阵热烈的掌声.Should NASA be split into sepa...