The methods of expunging methanol from C5 with pervaporation membranes were studied in this paper.
对用渗透蒸发膜分离方法去除C5中的甲醇进行了研究。
2
Decades after expunging the idea of "small wars" from their textbooks after the trauma of Vietnam, American officers are relearning the lessons the hard way.
美国在越南饱受创伤之后，花了几十年从教科书上删去了“小战争”的概念，但美国的军官正困难地重学教训。
3
Her whole day was dedicated to the ritual of preparing food in tiny portions that she would sometimes not even eat, and to expunging calories by ruthless exercise regimes.