1.
To cover the surface of(an inexpensive metal)with a layer of precious metal, such as gold.
镀用贵重金属层例如金等覆盖（非贵金属的）表面
2.
Effect of Recasting on the Mechanical Properties of the Non-precious Ceramic Alloy;
反复熔铸对非贵金属烤瓷合金机械性能的影响
3.
Application and research progress of gold-plating on improving non-precious metal corrosion resistance
镀金提高非贵金属抗腐蚀性的研究进展与应用
4.
watch bracelet of precious metal or of metal clad with precious metal
贵金属或包有贵金属的金属制成的表镯
5.
Preparation of Non-noble Metal Oxides Electrode and Research on Its Properties
非贵金属氧化物电极的制备及其性能的研究
6.
Preparation of Non-noble Catalysts and Its Application as a Three-way Catalyst
非贵金属催化剂的制备及三效催化性能的研究
7.
Gold is a noble metal.
黄金是一种贵重的金属。
8.
Gold is a precious metal.
黄金是贵重的金属。
9.
Photopromoted Methoxycarbonylation with Non-precious Metal as Catalyst;
光促进下非贵金属催化的氢甲酯化反应研究
10.
Molecular Devices for Photoinduced Hydrogen Production Based on Non-noble Metal Catalysts
基于非贵金属催化剂的光致产氢分子器件研究
11.
Catalytic Transfer Hydrogenation of 1-Octene with Non-precious Metal under Irradiation
光照下非贵金属催化的1-辛烯转移加氢反应
12.
Kinetic study on deoxidation of coal-bed gas by sulfur-tolerant a non-noble metal catalyst
煤层气非贵金属耐硫催化剂脱氧的动力学研究
13.
Clinical effect evaluation of two kinds of unprecious metal ceramic crown
两种非贵金属烤瓷冠的临床应用效果评价
14.
The Development of Presulfurization Technology for Non-Noble Hydrogenation Catalyst
非贵金属加氢催化剂的预硫化技术进展
15.
Toxicity of Non-precious Dental Materials on the L-929 Cell
口腔修复非贵金属材料对L-929细胞毒性的研究
16.
the precious metals, ie gold,silver and platinum
贵金属（金、银、白金）
17.
fish-knife, non-cutting, of base metal plated with precious metal
非切削用鱼刀,贱金属制（不包括镀贵金属者）
18.
Study on the Marginal Fit and the Fracture Resistance of the Non-precious Metal-ceramic Crowns of the Different Marginal Types;
不同冠边缘形式的非贵金属金瓷冠边缘适合性及其强度的研究