With the soaring development in cosmonautics , aeronautics , telecommunication , development of new lighting and alloy material , there are tremendous demands of gallium in both domestic and international market 随着航天、航空、通讯、照明新材料、合金新材料等高科技技术的迅猛发展，国内外市场对金属镓这一稀有金属的需求将会迅速增加。
The process is very similar to that used to electroplate aprecious metal onto an object except that the absence of a receiving object at another electrode causes the silver to remain in a colloidal suspension in the water 这个工艺过程与将稀有金属电镀到物体上非常相似,只是另一个电极上没有接受物体而使银保留在水中的胶状悬浮液上
Lemo was formed in switzerland in 1946 . originally , it was a manufacturer of contacts in noble and rare metals , but in 1957 the company took a major step forward with the introduction of the push - pull self latching connector 瑞士lemo lemo于1946年在瑞士成立，最初它是昂贵稀有金属的生产厂商，但是在1957年公司大幅度的生产按钮自锁接头。
Layered mafic intrusions not only represent natural laboratories for studying processes of magmatic differentiation and assimilation within the crust , but also contain extensive precious and base metal mineralization 层状镁铁质岩体不仅是研究岩浆分异演化过程和地壳混染作用的最佳天然实验室，其中还广泛赋存重要的稀有金属和贱金属矿床。
It is applied to smelting the carbon steel , alloy constructional steel , stainless steel , copper , aluminum , gold , silver , niobium and tantalum etc . the technology of our intermediate frequency smelting equipment is ripe 它适用熔炼：碳素钢合金结构钢不锈钢铜铝金银以及稀有金属铌钽合金等。我公司生产的中频熔炼设备电路技术成熟微机控制，工作稳定，软起动，成功率高。
Lan xinzhe yu jinglu wang chenggang zhao xicheng yong qingxia ； making low alloy corrosion resistant steel from nonferrous metals slag ； hsla steels 2000 conference ， by the chinese society for metals ， oct . 31 - nov . 2 ， 2000 ， xi ‘ an ， china 第三届中国工程院化工、冶金与材料会议，论文集“熔融还原法从金川闪速炉渣制备低合金铁* ，稀有金属材料与工程，兰新哲贺昕俞景禄赵西城王成刚，西安。
Graphite electrodes are mainly used as electric conduction material of are furnace for steel , yellow phosphorus and industrial silicon , smelting all kinds of alloy steel , nonferrous metal and rare metal , graphite electrodes will have a wide and steady market now and in the future 石墨电极主要用于钢铁黄磷工业硅等工业的电弧炉作导电材料，冶炼各种合金钢，有色金属及稀有金属。石墨电极在目前及今后一段时期内均有广阔稳定的市场。
“ ouslan ” the thermal insulation layer uses the rare metal completely , and uses the even coating technology , spreads evenly the conductive sea the cloth on the basement membrane , will cause it to occupy in the sunlight the main quantity of heat to reflect a part , to absorb a part , simultaneously will transmit a part , will create an independent cool world for you 隔热层全部采用稀有金属，并采用均匀镀膜技术，将金属层均匀涂布在基膜上，使其将占太阳光中主要热量反射一部分、吸收一部分，同时传递一部分，为您创造一个独立的清凉世界。
These examples help explain why most environmental scientists believe that over the next few decades , the danger of degradation and exhaustion is greatest for potentially renewable resources , not nonrenewable resources ( except for petroleum and perhaps a few scarce minerals for which we can ' t find economically and environmently acceptable substitutes ) 这些例子可以解释为什么大部分环境学家相信在未来的几十年里，退化和资源枯竭是对潜在再生资源的最大危险，而非不可再生（除了这个问题之外，也许我们不能找到一些经济又环保的代替品来代替稀有金属） 。
