| 1. | Vast and irregular plains of ice stretched out in every direction . 唯见延绵不绝,高低起伏的一片冰洲。 |
| 2. | We can be conveniently studied with reference to a crystal of calcite or iceland spar . 我们可以很方便地以方解石或冰洲石晶体来进行研究。 |
| 3. | Combination of iceland crystal and glass for e beam superhigh transmittance polarizing prism 冰洲石-玻璃组合e光超高透偏光棱镜 |
| 4. | Iceland agate lava 冰洲玛瑙容岩 |
| 5. | Geologic characteristics of iceland crystal deposits and possible mining and dressing 黔西南某冰洲石矿床地质特征及矿石的采选方法 |
| 6. | Sellmeier coefficients for the refractive indices of calcite at crystal different temperatures 冰洲石晶体色散方程解析研究及折射率温度系数表达式 |
| 7. | In this paper , the yellow and purple iceland spars are heated to remove their color 本文通过热处理的方法,对黄色和紫色冰洲石的颜色进行改善。 |
| 8. | Heating can bleach these color centers , consequently , the color caused by them is removed , and iceland spars become colorless 加热使冰洲石的色心受到破坏,从而使冰洲石的颜色褪去。 |
| 9. | The calcite popular name has the big calcite and the small calcite two kinds , namely cleaves completely and incompletely two kinds , in big calcite has the transparency is very high , quality excellent is the iceland spar 方解石俗称有大方解石及小方解石两种,即解理完全及不完全两种,其中大方解石中有的透明度很高,质量上乘的的即为冰洲石。 |
| 10. | But the normal iceland crystal is a nature crystal and transparent . it is not easy to find pure and big iceland crystal , so it is difficult to make large - size polarizing device . at the same time , the process is complex and with high price 但由于通常使用的冰洲石晶体是一种天然晶体,纯净的晶体很少,且不易得到大块,所以晶体起偏镜不容易做成大口径,且价格高,加工工艺复杂。 |