Using benzene as internal standard, the calibration factors of derivative of aldehydes 2,4 - dinitrophenylhydrazine ( DNPH ) were measured.将醛类物质与2, 4- 二硝基苯肼 ( DNPH ) 的衍生反应液直接进样,以苯为内标物,测定了甲醛 、 乙醛等醛类物质DNPH衍生物的校正因子....
他乘着一架怪鸟式小型侦察机飞抵罗马.He was flown out in a tiny Stork spotter plane to Rome.第三飞行大队和它的纽波特式侦察机不断骚扰敌人,扫射土耳其人的阵地.No 3 Wing and its Nieuport Scouts made a constant nuisance of themselves by strafing Turkish positions.他们正用他们的激光束追...
I wouldn't entertain the idea of such an unsociable job.我不会考虑从事这种不跟人打交道的工作。My marriage has broken up. It has made me reclusive and unsociable.我的婚姻破裂了。这让我变得孤僻、不愿与人来往。He was taciturn and unsociable, and rarely spoke t...
He owned several patents.他拥有几项专利发明.He held a number of patents for his many innovations.他拥有多项发明的专利权。Intangible assets include goodwill, patents, trademarks, copyrights, and franchise.无形资产包括商誉 、 专利权 、 商标 、 版权, 以及专营权.The b...