The hydrogenation of terpineol to dihydroterpineol catalyzed by Raney Nickel modified by potassium borohydride was studied.研究了以硼氢化钾修饰的雷尼镍催化剂催化松油醇加氢制备二氢松油醇的反应....
The lighthouse beam was quite distinct in the gathering dusk.灯塔的光束在渐浓的暮色中清晰可见。Editorially, they never really became a unique distinct product.就立场和观点来说，它们从未真正做到树立起自己独具一格的视角。Engineering and technology are disciplines disti...
Macaulay represents Charles II as a faithless fanatic.麦考莱把查理二世描写为无信义的狂热者.The man is a fanatic who is determined to wipe out any opposition to the way he conducts himself.这人是个狂热分子，决意扫除任何反对其行事作风的声音。Alexander is a football ...
北美的一种草本植物,类似水芹,但叶象艾菊叶.North American herb with bitter - tasting pinnate leaves resembling those of tansy.富含该营养素的天然食物有萝卜 、 洋葱 、 甘蓝 、 水芹.The natural nutrient - rich foods are carrots, onions, cabbage, cress....
If you are going to do some cleaning or cooking, wearing apron is a sensible idea.如果你准备做一些家务或是做饭的话, 穿上围裙是明智的选择.There is a serious sediment deposition in the wharf apron of an alongshore pile wharf.摘要顺岸式桩基码头前沿会发生较爲严重的泥沙淤积...