In some ways, anhydrous ammonia is just as safe to handle as gasoline.在某种程度上说, 无水氨使用起来与汽油一样安全.Methanol dehydrogenation is a promising route for commercial production of anhydrous formaldehyde.甲醇直接脱氢制无水甲醛是具有工业化前景的新工艺.Anhy...
After cerebella block operation, what does sequela have?小脑梗阻手术后, 后遗症有 哪些 ?Objective To investigate finding of cerebella astrocytoma and to improve the diagnosis ability for this disease.目的:总结小脑肿瘤误诊的常见原因,以提高本病的早期确诊率....
船向风的一侧the windward side of the boat一阵狂风把气球吹向风中.The balloon soared up on a gust of wind.时下店主和屋主纷纷向风水师求教.Store and home owners are consulting feng shui masters for advice....