The Players: Paris Hilton, Rob Lowe, Kendra Wilkinson, Pamela Anderson and Tommy Lee, R. Kelly, Colin Farrell, Kim Kardashian, Dustin Diamond
帕里斯希尔顿、罗伯洛、肯德拉威尔金斯、帕米拉安德逊、托米李、R凯莉、科林法拉尔、金卡戴珊、达斯汀戴蒙德
The application of diamond has always been a major R & D target in abrasives industry.
在磨料磨具行业中，超硬材料金刚石的应用一直是行业研究、关注的问题。
A new type of thin-wall diamond core drill bit is developed through the analysis of drilling feature on the r.
通过对在钢筋混疑土、花岗岩等建筑物上钻孔特点的分析，本文设计了一种新型的取芯式薄壁金钢石钻头。
A new type of thin-wall diamond core drill bit is developed through the analysis of drilling feature on the r.
通过对在钢筋混疑土、花岗岩等建筑物上钻孔特点的分析，本文设计了一种新型的取芯式薄壁金钢石钻头。
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