Copper - containing catalysts are the most suitable catalysts for producing 1, 2 - propanediol through catalytic hydrogenolysis of glycerol.對(duì)甘油催化氫解制取1, 2- 丙二醇效果最好的是含銅的催化劑....
This episode remains sharply engraved on my mind.這段經(jīng)歷至今仍深深地銘刻在我的心中。The colorful agates are engraved for pursuing lofty spirit.絢麗的瑪尼石,鐫刻著崇高的精神追求.Some Latin words were engraved on the plaque.牌匾上刻著些拉丁文。A print of a woodcut ...
她能聽得見外面路上的吵鬧聲。She could hear a clamour in the road outside.吵鬧聲不絕于耳，我無法集中精神。I can't concentrate with all that noise going on.你要是關(guān)上那扇門, 就聽不到吵鬧聲了.If you close that door, you can shut the noise in....
It'served to make him rebellious and hence lethargic at times.這種情況引起他對(duì)現(xiàn)狀的反抗心理,有時(shí)候便老是沒精打采.It made us all lethargic before we had gone far.行不多遠(yuǎn),大伙兒都意興索然.The hot weather made me feel lethargic.炎熱的天氣使我昏昏欲睡....