| 1. | Diamond is a third form of solid carbon .
金刚石则是第三种形式的固态碳。 |
| 2. | The brilliance of diamond is due in part to its large dispersion .
金刚石的光辉异彩，部分是由于它有强烈的色散。 |
| 3. | The single crystal is sectioned and then sliced and subsliced with a diamond .
用金刚石锯先将单晶体切成段，再切成片。 |
| 4. | All other metals and nonmetals lie within the boundaries of lead and diamond .
所有其他金属和非金属都处在铅和金刚石的界限之内。 |
| 5. | A very small hole can be drilled in a diamond for use as a die in drawing very small-diameter wire .
可在金刚石上打出一个很小的孔，作为直径极小的金属丝的拉丝模具之用。 |
| 6. | The allotropes of carbon include diamond, graphite and charcoal, all with the same chemical properties .
碳的同素异形体包括金刚石、石墨和木炭，所有这些物质都具有相同的化学性质。 |
| 7. | It is interesting to note that such high pressures yielded a material harder than diamond and more heat-resistant .
饶有趣味的是这种高压制成的物品比金刚石还坚硬，而且抗热性更强。 |
| 8. | Synthesis of industry diamond using pure iron catalyst
掺硼金刚石的高温高压合成 |
| 9. | Composite welding of the diamond and tungsten carbide
金刚石与碳化钨的复合堆焊 |
| 10. | Seamless steel tubes standard use diamond core dvilling
金刚石岩心钻探用无缝钢管 |
