对甘油催化氢解制取1, 2- 丙二醇效果最好的是含铜的催化剂.Copper - containing catalysts are the most suitable catalysts for producing 1, 2 - propanediol through catalytic hydrogenolysis of glycerol....
...hysterical laughter which gradually metamorphoses into convulsive sobs...歇斯底里的笑声渐渐地变成了剧烈的抽泣A larva metamorphoses into a chrysalis and then into a butterfly.幼虫变为蝶蛹,再变成蝴蝶.The poet metamorphoses the everyday into the uni...
Useappliance, cooker , curst of apparatus, machine equipment, furniture, and automobile accessory etc.家电 、 炊具、仪器仪表外壳 、 机电设备 、 室内家具 、 汽车零部件等.There was a thin curst of dirt around the bath.浴缸四周有一层薄薄的污垢.A curst cow has shor...
Sprinkle the meat with salt and place in the pan.在肉上撒上盐，然后放进平底锅。Sprinkle sugar evenly over the top of the cake.把糖均匀地撒在蛋糕上.Sprinkle the avocado slices with lemon juice.将柠檬汁洒在鳄梨片上....