manganese peroxide二氧化锰The sample was molten and decomposed with sodium peroxide , leached and acidified hot water and - volumed.试样以过氧化钠熔融分解,热水浸取、酸化,定容.Explain why barium forms peroxide but beryllium does not.解释为什么钡能形成过氧化...
The book was inspired by a real person, namely Tamara de Treaux.那本书的灵感源于一个真实人物,即塔玛拉·德特罗。This might be interpreted as a de facto recognition of the republic's independence.可以认为这实际上承认了该共和国的独立。I zmellz de bloods odz an...
My mother always made me feel I wasn't coming up to scratch.母亲总是使我觉得自己不够优秀。Her performance wasn't up to scratch.她的演奏没达到水准." Your work's nowhere near up to scratch, Su Lun!“ 苏伦, 你的工作很坏!...
铜是热和电的良导体.Copper is a good medium for the conduction of heat and electricity.木头是热和电的不良导体.Wood is a poor conductor of heat and electricity.铜是电的良导体.Copper conducts electricity well....
Provide you with the services of design, processing, manufacture of mould, fixture, spring clamper and personnel training.为您设计, 安排加工工艺; 制作模具 、 夹具 、 弹簧夹头;人员培训的服务....
Mr Short's behaviour is only on the cusp of acceptability.肖特先生的行为勉强能接受。The formal demonstration of system acceptability to obtain authorization for its operational use.为使系统获准投入运行性使用,对系统的可接受性所做的正式演示.In either case, t...