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- heavy platinum metal 铂类重金属,铂族重金属
- heavy platinum metals 铂族重金属
- The progress of titrimetric analysis of platinum metals at home and abroad since 1980 has been reviewed. 评述了1980年以来国内外铂族金属滴定分析进展。
- Platinum metals are important stratagic metals,the world has attached more and more importance to it. 铂族金属是重要的战略物资,越来越受到世界各国的重视。
- acetylacetonate platinum metal organic complex 乙酰丙酮铂族金属有机配合物
- Solvent extraction technique in the refining of platinum metals has many obvious advantages over the traditional precipitation method. 铂族精炼中的溶剂萃取法比传统的沉淀法具有许多优点。
- In China, it is more prominent, about 86% amount of nickel, 90% amount of platinum metals, 7.3% copper comes from nickel-copper sulfide magmatic deposits. 我国的情况更为突出,镍金属储量近86%25、铂90%25以上、铜约7.;3%25均来源于铜镍硫化物岩浆矿床。
- In this paper,methods for separation and concentration of platinum metals are reviewed,and merit and shortcoming for each method are apprised.38 references are cited. 综述了铂族元素的分离富集方法,评价了各种方法的优、缺点。引文38篇。
- In this paper,the main characteristics of platinum metals and the state quo of applications and their researches and development for broad application are sketched out. 本文概述了铂族金属的主要特性及在各个领域研究应用的状况,综述了铂族金属现代制备加工的主要工艺和手段,同时也提出了铂族金属发展的方向。
- Chemical vapor deposition technique(CVD)is available to making highadherent,dense(non-porous)and fine grain platinum metals coatings on the surfaces of refractory metals such as Mo,Re and W et al . 化学气相沉积 (ChemicalVaporDeposition ,CVD)技术可用在高熔点金属如Mo、Re、W等表面制备结合力好的铂族金属涂层。
- He lugged a heavy handcart along. 他使劲拉走那笨重的手推车。
- He made manful efforts to move the heavy furniture. 他作出勇敢的努力搬动沉重的家具。
- She could only croak because of her heavy cold. 她因患重感冒只能用沙哑的声音说话。
- She will not shove the heavy load onto others. 她不愿意把重担推给别人。
- Platinum is used to make jewelry. 白金常常用来做珠宝饰物。
- Giving him a heavy slating will do him good. 狠狠地斥责他一顿会对他有好处。
- How could he get his heavy box up all those stairs? 这么重的箱子他是怎么抬上楼的?
- Heavy taxes indispose a citizen to work hard. 重税于国民不愿意辛勤工作。
- A heavy shower drench the campers. 一阵骤雨把露营者都淋湿了。
- Even an oversight in the design might issue in heavy losses. 设计中那怕是一点点疏忽也可能造成重大的损失。