查询词典 chromium

Which has substituted such traditional technologies as Zinc electroplating, Chromium electroplating, Zinc hot-dipping , Zinc hot spraying, phosphorize etc

取代了电镀锌、电镀镉、热浸锌、热喷锌、磷化等传统工艺技术

Instead of environmentally toxic chromium oxidant, singlet oxygen generated photochemically was used as environmentally friendly and benign oxidizing agent to accomplish the transformation of pseudodiosgenin diacetate to diosone efficiently in a low toxic and less expensive solvent acetone.

裂解薯蓣皂甙元所得的假薯蓣皂甙元，在低毒且廉价的丙酮溶剂中，在光敏剂和光的存在下，与氧气反应，得到的产物再经酸解消除反应得到合成其它多种甾族药物的重要前体16-脱氢孕烯醇酮醋酸酯。

X-ray diffraction showed that the hydroxy-chromium oligocations can be used as a stable pillaring agent after aging at 70 ℃ for four days, and a pillared composite with high crystallinity can be obtain...

与原料2H-MoS2相比，柱撑材料的层间距增大，晶粒变小，比表面积增加并且热稳定性提高。对催化苯饱和加氢反应表明，柱撑材料Cr-MoS2的催化活性明显优于未柱撑的2H-MoS2和RaneyNi催化剂，且结晶度较好的柱撑材料更具有较高的催化活性和较好的可重复性。

The bare copper portions are oleophilic and consequently fatty ink-accepting whereas the non-etched hydrophilic chromium portions are moistened by the aqueous liquid emulsified in the ink or provided by the damping system in the planographic printing device.

裸铜部分是亲油性，因此脂肪油墨，而在非亲水铬部分蚀刻接受均是由油墨乳化的水液湿或在平版印刷设备减震系统提供。

This technology can answer heavy metal chromium not only use at plating chamfer, still answer water natural resources use at potcher, have the double effect of economic benefits and environmental protection.

由厦门威士邦膜科技有限公司开发的电镀废水循环回用技术，日前被评定为2008年国家重点环境保护实用技术。

All companies in Thailand in early 2002 that a 'high-tech world, as China's first China Aerospace Group / Houston hospital / yellow rope lead the entire group radiation center Thai Plant, in full production, pyrocondensation Casing has approved UL / cUL International Security Certification, the industry took the lead at home and abroad by SGS comprehensive test: lead Pb, Cd Cd, mercury Hg, hexavalent chromium Cr, PBB PBBS, PBBs ether PBDES.

全泰公司于2002年初在著称'世界高科技、中国第一照的中国航天集团/中国火箭院/中国黄缆集团辐照中心筹建全泰二厂，已全面投产，热缩套管已通过UL/cUL国际安规认证，国内外同行业率先全面通过SGS测试：铅Pb、镉Cd、汞Hg、六价铬Cr、多溴联苯PBBS、多溴联苯醚PBDES。

Chemical Products, Chemicals: inorganic acid, sodium compounds, potassium compounds, calcium compounds, barium compounds, manganese compounds, chromium compounds, nickel compounds, zinc compounds, magnesium compounds, aluminum compounds, single-element chemical products, even items of the five machines Chemical products, paraffin, waxes other chemicals, coke, oil and chemicals, alcohol, aldehyde chemicals, acetate chemicals, ketones, ethers, phenols chemicals, alkanes, alkenes, acetylene chemicals, amine chemicals, aromatic chemicals, Miscellaneous organic chemicals, acid chemicals, other chemicals, dyes and intermediates, pigment materials, plastic materials, agricultural chemicals: fertilizers, pesticides, growth agents, plastic sheeting, etc., equipment, pyrophoric alloys, articles of combustible materials , chemical reagents, rubber, imports, machinery and equipment, machinery and equipment, apparatus; photographic equipment; printing equipment; general machinery; textile equipment; Machine Components; a variety of equipment, Shanghai, Zhejiang, Guangdong, Jiangsu high-quality, low-carbon The new satellites technology goods manufacturers, exporters, wholesalers, traders, USA, United States importers, wholesalers, retailers, investors, designers, planners, please contact our office, George Chen, Mobile :+

化工产品类，化工原料：无机酸，钠化合物，钾化合物，钙化合物，钡化合物，锰化合物，铬化合物，镍化合物，锌化合物，镁化合物，铝化合物，单元素化工品，什项五机化工品，石蜡、蜡类其他化工品，焦、油化工品，醇、醛化工品，酯化工品，酮、醚、酚化工品，烷、烯、炔化工品，胺化工品，芳烃化工品，什项有机化工品，羧酸化工品，其它化工原料，染料及中间体，颜料原料，塑料原料，农用化工品：化肥，农药，生长剂，农膜等，器材，引火合金，易燃材料制品，化学试剂，橡胶，进口，机械设备，机械及设备，仪器；摄影器材；印刷器材；通用机械；纺织器材；机械基础件；各种成套设备，中国上海，浙江，广东，江苏优质，低碳，新颗科技商品生产商，出口商，批发商，贸易商，美国，美利坚合众国进口商，批发商，零售商，投资商，设计师，规划师们，请与我处联系，George Chen，Mobile：+

A new method using microwave digestion technique was developed for the determination of cadmium, chromium and lead in Lycoris radiata by graphite furnace atomic absorption spectrometry.

采用微波消解技术处理样品，用石墨炉原子吸收光谱法测定，对消解试剂和微波消解条件进行了筛选和优化，研究了石墨炉原子吸收的测定条件。

Objective:To investigate the effect of recasting on physical properties of a cobalt-chromium alloy in air environment.

目的：探讨空气环境对多次铸造的钴铬合金机械性能的影响。

Objective:To investigate the effect of recasting on physical properties of a cobalt chromium alloy in air environment.

钴铬合金在口腔修复领域应用广泛，为节省材料，降低修复体的成本，有些学者研究铸造剩余合金的回收再利用[1，2 ] 。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了