Several kinds of novel extraction solvents were presented which mainly included N - formylmorpholine, dimethyl formamide, etc. 介绍了石油化工领域采用的几种优良抽提剂,包括N - 甲酰吗啉 、 二甲基甲酰胺等.
She is endearingly free of pretensions.她丝毫不做作，很讨人喜爱。He makes no pretensions to skill.他并不自以为有技能。And as far as the governing class made any pretensions to govern, they were ridiculous too.自命有统治能力的统治阶级, 也可笑.Her wide-eyed in...
The occurrence of malodor has obvious seasonal.恶臭的发生具有明显的季节性。The typical K - F reagent has disadvantage of high poisonousness and pyridine malodor.经典K-F试剂缺点是毒性大,且具有吡啶的恶臭.The criteria for malodor evaluation usually used i...
有人坠落压在他身上，致使他颈部受重伤。He sustained serious neck injuries after he broke someone's fall.熨斗压在湿布上时发出了嘶嘶声.The iron hissed as it pressed the wet cloth.树倒了, 把他压在地上动弹不得.The tree fell, pinning him to the ground....