Preparation of salicylic hydrazide . Controlling material mole ratio and the product recrystallization is the key.水杨 酰肼的制备控制原料的摩尔比、产物的重结晶是关键.A new method for determining hydrazide group introduced to polymethyl acrylate ...
在这些裙子下面, 则是另外穿上一件及踝的灯笼裤.Beneath it all, wide - legged pants gathered at the ankles are worn.那高个子老是穿着一条长不及踝的裤子.The boy is so untidy - he always has his socks hanging half mast.他穿着正式的长及足踝的长袍.He was vested in an ankle - len...
Tim has longish, shaggy hair.蒂姆留着蓬乱的长发。She's about my age, with longish hair.她年龄与我相仿，头发较长。Cinderella Skeleton Picked the lock with a longish pin.辛德瑞拉·斯葛里顿用一根长长的大头针撬开锁....