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harmful impurity element 有害杂质元素
Alunite is a harmful impurity which is difficult to remove from kaolinite, and so is kaolinite in alunite ore. 明矾石是高岭土中难以除去的有害杂质,高岭石也是明矾石矿石中的有害杂质。
There are pyrite and chalcopyrite as sulphide minerals,and apatite as harmful impurity occuring as independent mineral. 本研究采用合理多段、适当细磨工艺,强化微、细粒赤铁矿及假象赤铁矿的回收。
Briefly introduces the demolishing mechanism of harmful impurity phosphor in pipeline. 简述了有害杂质磷在管道焊缝中的破坏机理。
The results indicated that the dejects was caused by pitting corrosion of impurity element iron in silver coin by environmental chloride compound. 结果表明，在银币缺陷部位的腐蚀坑内存在以铁元素为主的物质，基材中的铁元素与外界的氯引起银币的腐蚀，造成了表面缺陷。
The effect of impurity element Fe on the mechanical property,corrosion and aging ofsand-cast ZA27 alloy has been investigated. 本文考察了杂质元素铁对ZA27合金的机械性能和腐蚀老化性能的影响；
As harmful impurity in copper scrap, nickel shall be removed thoroughly from anode furnace by means of oxidation, so as to make sure satisfactory cathodes are produced in electrolytic operation. 杂铜中多余的镍作为有害杂质在阳极炉彻底氧化造渣除去,以确保阳极铜在电解时获得满意的阴极铜;造成了大量的镍白白损失。
Determining trace impurity element of the standard europium oxide by the standard addition method.So the errors owing to neglecting the impurity in the standard are eliminated. 用标准加入法测出氧化铕基准中的微量杂质元素，消除了由于忽略基准中的杂质元素的含量给分析测定带来的误差。
Abstract： 19 impurity elements in yttrium metal were determined by ICP-AES. 摘要：本文介绍了用ICP-AES法测定金属钇中19个杂质元素的方法。
atmosphere is acidless,alkali-free and no other harmful impurity. 器件应贮藏在贮藏室，周围环境无酸、碱性腐蚀或其它有害气体.
A method has been studied for simultaneous determination of eight impurity elements Cr,Cu,Mg,Mn,Mo,Ni,Ti and V in pure iron by ICP AES. 本文研究了用ICP－AES法同时测定纯铁中8种杂质元素：Cr、Cu、Mg、Mn、Mo、Ni、Ti、V的分析方法。
Impurity elements of typical crystal are detected by glow discharge spectroscopy(GDMS)and the source of which are discussed. 进行了杂质定量分析和光谱分析，对晶体中杂质的来源进行了讨论。
Copper concentrate with rich impurity element 高杂铜精矿
The quantity of each impure element is at ppt level, which offers the most superior reagent in purity on the market. 每一不纯元素的量均在ppt之等级,为市面上最高纯度之试剂。
Optical Spectral Verification of A Harmful Impurity to Palladium Catalyst 一种对钯催化剂有害杂质的光谱鉴定
L owering the contents of Fe and Si impurity elements and adjusting Cu content can reduce the coarse hard phases and the excess phases which are difficult to diss olve. 降低Fe和Si杂质元素及调整合金主要成分Cu含量 ,可以减少难溶粗大硬相质点和过剩相 ;
A benign tumour will not cause you any fatal harm. 良性肿瘤不会对你有致命的伤害。
An ICP AES method was established for the determination of Be and impurity elements in Au Be Alloy ,such as platinum,palladium,rhodium,iridium,silver etc. 研究了用ICP－AES法测定Au－Be合金中Be及萃取Au后测定微量Pt、Pd、Rh、Ir、Ag等25个杂质元素的方法。
If you do harm to me I shall not look over you. 如你对我使坏，我可不饶恕你。
His failures did his reputation a lot of harm. 他屡次失败使他的声誉受到很大损害。