Objective To establish solvent desorption gas chromatographic method for determination of Diisobutyl ketone in workplace.目的建立工作场所空气中二异丁基(甲)酮的溶剂解吸气相色谱测定方法.The diisobutyl dicarboxylate was prepared by using acid and isobut...
到1980年，迈阿密海滩已经完全风蚀了。By 1980, Miami beach had all but totally eroded.有机橡胶经过风蚀后,逐呈现出树脂状的外表.Organic rubbers develop a resinous surface crust through weathering.粘着不牢的表面对片状侵蚀和风蚀更加敏感.Weakly coherent surfaces are more susceptib...
裁判人员包括一名台上裁判员 、 若干台下评判员和一名计时员.Officials include a referee, judges and a timekeeper.是谁让老贝勒变作了选美评判员的?Who made the Old Bailey a judge of beauty?他们委任选举区的评判员及在大选日工作的官员.They appoint precinct election judges and other election ...
Objective To discuss the diagnosis and surgical treatment of pulmonary aspergilloma.目的探讨肺曲菌球的诊断和外科治疗.Branching, septate hyphae are close - packed here and radiating outward in this aspergilloma.曲霉肿中有分支 、 有隔膜的菌丝聚集并呈放射状排列....