1) gold brooch with diamonds
镶钻金饰针
2) glod brooch with jadeite and diamond
镶翠钻金饰针
3) diamond brooch
镶钻石胸针
4) gold brooch
金饰针
5) gold and silver inlay jewellery
金银镶嵌首饰
6) impregnated diamond bit
孕镶金刚石钻头
1.
Optimization design and test of nonsmooth ratio of bionics impregnated diamond bit
仿生孕镶金刚石钻头非光滑度优化设计及试验
2.
Two types of matrix are provided for selecting in making impregnated diamond bit for Continental Scientific Drilling.
在对普通孕镶金刚石钻头高温力学性能检测的基础上 ,实验研究了 6种WC(W )基和 6种Ni基配方胎体的高温力学性质 ,从而提出 2种可供研制大陆科学钻探深部高温孔段孕镶金刚石钻头胎体使用的配方方案。
3.
A new type of impregnated diamond bit with two sorts of diamond abrasives has been developed, which can improve both penetration rate and service life simultaneously.
研制出一种两级磨料新型孕镶金刚石钻头，该种钻头解决了时效与寿命不能同步提高这一长期困扰钻头研制者的难题。
补充资料：刚石
1.矿物，氧化铝的结晶体。有玻璃光泽。红色透明的叫红宝石，绿色透明的叫绿宝石，是贵重的装饰品。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条