R " is a replaceable function , e . g . acetoxy, methoxy, their acyloxy and alkoxy homologs or halo.R ” 是取化基,如乙氧基 、 甲氧基及它们的环氧和烷氧同系物或卤基.The results show that zinc acetate - stearic acyloxy has thermal stability and synerg...
...a light, lofty apartment in the suburbs of Salzburg...位于萨尔茨堡市郊的一间采光好、屋顶高的公寓The lofty walls of the castle seemed impregnable.这座城堡的高墙似乎坚不可摧。Young people should have lofty ideals and aims.年轻人应该有崇高的理想和目标。...a vast, lofty ...
The minute you begin to forgive yourself, you start to dwindle.[人都是在原谅自己的那一分钟开始懈怠. ]Savings will begin to dwindle as retirees run them down.退休人员会使中国的储蓄率开始下降.The number of people going to the cinema seems to dwindle stead...