Multiply unsaturated compounds are usually best named by the IUPAC nomenclature.多重不饱和化合物一般最好用IUPAC命名法来命名.Charles trotted out his little bit of scientific nomenclature.查尔斯炫耀他那点科学名词.It developed variations in nomenclature ...
...the internationally agreed rules of chemical nomenclature.国际公认的化学命名规则It developed variations in nomenclature and in substance.它在名称上和实质上都发生了一些变化.Multiply unsaturated compounds are usually best named by the IUPAC nomenc...
当手电筒的光照到她身上时她僵住了。She froze when the beam of the flashlight struck her.皮特关掉手电筒,停下来休息。Stopping to rest, Pete shut off the flash.我插钥匙时,请用手电筒照着锁头。Shine the torch on the lock while I try to get the key in....