贵金属

Thiourea and its derivate have an important performance in the analyses of precious metals.Their application to photometric analysis,electrochemical methods,atomic absorption spectroscopy,separation and enrichment of precious metals have been concerned.The related research and development since 1980 have been reviewed.

马媛硫脲及其衍生物(R-NH-CS-NH-R′)以其独特的分子结构在贵金属分析中一直占有重要位置，它们在贵金属的光度分析、电化学分析、原子吸收光谱分析和分离富集等领域中的应用一直为人们所关注，本文重点评述1980年以来相关的研究与发展。

The Client hereby acknowledges that he shall have sufficient knowledge in computer or other field to operate the Internet Precious Metals and FX Trading Services properly and ensure the computer or other devices of the Client functioning properly and the Dealer shall not be responsible for any loss arising from improper function of the computer or other devices and improper operation on the part of the Client

将只按照本补充协议，客户协议及交易商不时提供给客户的用户指南所规定的指示和程序使用网上贵金属现货及外汇买卖服务；客户须确保其有足够的电脑或其他知识，适当地操作及使用网上贵金属现货及外汇买卖服务，及其电脑及其他工具运作正常，任何由於客户操作不当引起的损失，交易商概不负责。

That he shall logoff the Internet Precious Metals and FX Trading Services immediately following the completion of each transaction.

客户在完成每次网上贵金属现货及外汇买卖后，应立即退出网上贵金属现货及外汇买卖服务。

Potassium Aurous Cyanide, our leading product, is made form Au99.99 gold and potassium cyanide from Japan or USA, with the most advanced technology of the world. Our atomic absorption spectrometer and gold purity tester assure high purity of the product and safety for our clients.

是当前极少数持有国家准许生产氰化亚钾贵金属化工产品证书的专业生产企业。2005年上半年，公司进行了全面整合，聘请了贵金属精细化工专家，加大投资规模，形成了年产值近5亿的生产能力。

The Client understands that the Internet Precious Metals and FX Trading Services provided by the Dealer isan automated service that enables him to send electronic instructions to purchase, sell and otherwise deal with spot precious metals and FX. The Client hereby agrees to open and maintain spot precious metals and FX trading account with the Dealer, which can enable him to use the aforesaid services and

客户明白交易商提供之网上贵金属现货及外汇买卖服务使客户能透过互联网买卖贵金属现货，客户根据以下条款及条件及受此等条款及条件规限，同意开设及维持一贵金属现货交易户口及透过交易商网上贵金属现货及外汇买卖服务运作该户口，以进行贵金属现货及外汇买卖

The Client understands that the Internet Precious Metals and FX Trading Services provided by the Dealer is an automated service that enables him to send electronic instructions to purchase, sell and otherwise deal with spot precious metals and FX. The Client hereby agrees to open and maintain spot precious metals and FX trading account with the Dealer, which can enable him to use the aforesaid services and subject to the following terms and conditions

客户明白交易商提供之网上贵金属现货及外汇买卖服务使客户能透过互联网买卖贵金属现货，客户根据以下条款及条件及受此等条款及条件规限，同意开设及维持一贵金属现货交易户口及透过交易商网上贵金属现货及外汇买卖服务运作该户口，以进行贵金属现货及外汇买卖

We devote in the research, development, production and marketing of precious metal compound and related products with reliable quality, such as; potassium gold noncyanide, Rhodium sulphate, potassium tetrabroaurate, Chloroplatinic acid, gold chloride, Ammonium chloropalladate, Ammonium tetrachloropalladate, recycled and refined precious metals etc.

公司主要从事贵金属材料相关产品的研究、开发、生产和销售，主要产品有无氰金盐和其他贵金属化合物，包括：硫酸铑、溴金酸钾、氯铂酸、三氯化金、二氯化二氨络钯、二氯化四氨络钯等，并提供贵金属资源二次回收服务。

Among them, the catalysts with the support of SAPO zeolite performed well properties, Pt catalysts exhibited better performance than Pd catalysts, the activity and selectivity of noble catalysts were much better than that of non-noble metal catalysts. The carbides and oxides of W and Mo also performed well for n-heptane isomerization.

正庚烷异构化催化剂中，研究较多的是以SAPO、HZSM-5和Y、β型分子筛为载体的贵金属催化剂，其中SAPO分子筛载体的性能较优，Pt比Pd具有更好的催化性能，非贵金属／分子筛催化剂的活性比贵金属／分子筛催化剂相差较大。

This thesis is trying to prove the law of money evolvement with the history of Chinese monetary modernization. Money is evolved from none-precious metal to precious metal; from money by weight to coins made of precious metal, from convertible bank notes to unconvertible bank notes.

本文试图，用中国近现代的货币制度现代化情况来印证货币的演变规律：货币的演变是从具体物品到抽象符号，从贱金属即从按重量交易的贵金属发展为用贵金属加工成的铸币，在发展为可兑换贵金属铸币的纸币，最后发展为不可兑换纸币的这样的一个过程。

By a series of the characterization on its textural properties and reactivity, we have found that the zeolitic shell in the catalyst could effectively prevent the soluble palladium species from being leached into the reaction solution because of the special molecular sieving effect of the zeolitic shell, endowing the catalyst with high reusability.

然而，对很多的贵金属参与的工业反应而言，由于反应物原料本身含有痕量的含硫或含氮的化合物，在反应过程中，这些杂环化合物分子与贵金属的强相互作用导致了贵金属活性中心被覆盖而失活，造成催化剂的中毒。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷