The method of determining Ni, Cu and Pbi n urine with isotope dilution mass spectrometry ( IDMS ) is described.介绍了采用同位素稀释质谱法 ( IDMS ) 测定冻干人尿样品中镍 、 铜、铅的含量.The stability of a dynamic dilution system for Unsymmetric dimethy...
Gangs of labourers dug the canals.一群的工人挖掘运河。They have had to seek work as labourers.他们只好找体力活儿干。...a gang of labourers.一群工人He met mill hands, miners and farm labourers.他见过工厂工人、矿工和农场工人。She loathed being the child of impove...
Trinitrotriazidobenzene is less sensitive to impact and friction than mercury fulminate.三硝基三叠氮苯的摩擦感度和冲击感度比雷汞低.Mercury fulminate may contain trace of mercuric oxalate.雷汞中可能含有微量的乙二酸汞.Conclusions The primary cause for acute...