本文介绍了分子蒸馏的概念基本原理及其分离特点.This paper describes the definition, basic principle and advantages of molecular distillation.尼古丁可以用蒸气蒸馏的方法从烟草废料中萃取.Nicotine can be extd. from tobacco waste by steam distn.这是一种使用罐馏器蒸馏的苹果渣白兰地.An Ame...
I have some sore swellings on my gum and jaw.我的牙床和下巴又肿又痛.These swellings are known as buboes.这些肿胀称为淋巴结炎.He have some sore swellings on his gum or jaw.他的牙床和下巴肿痛.There are two small swellings on his face below the lip.他的嘴唇...
the theory of demographic transition人口转变论This quiet demographic counter - revolution is a dramatic upsurge in intermarriage.这种人口统计学意义上的逆向流动便是异族婚姻的大幅增加.But the demographic it's targeted at is very technology - savvy....