冰洲石 的英文怎麼說
中文拼音 [bīngzhōudàn]
冰洲石
英文
calcspar-
We can be conveniently studied with reference to a crystal of calcite or iceland spar.
我們可以很方便地以方解石或冰洲石晶體來進行研究。Combination of iceland crystal and glass for e beam superhigh transmittance polarizing prism
冰洲石-玻璃組合e光超高透偏光棱鏡Geologic characteristics of iceland crystal deposits and possible mining and dressing
黔西南某冰洲石礦床地質特徵及礦石的采選方法In this paper, the yellow and purple iceland spars are heated to remove their color
本文通過熱處理的方法,對黃色和紫色冰洲石的顏色進行改善。Heating can bleach these color centers, consequently, the color caused by them is removed, and iceland spars become colorless
加熱使冰洲石的色心受到破壞,從而使冰洲石的顏色褪去。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
方解石俗稱有大方解石及小方解石兩種,即解理完全及不完全兩種,其中大方解石中有的透明度很高,質量上乘的的即為冰洲石。The courses of the enhancement do n ' t damage iceland spar or change its physical properties, such as birefringence index, optic chatacter. these show that the samples measure up to their industrial standards after the heating. the experiment is successful
褪色后的冰洲石晶體外觀完好,其雙折率、偏光性等物理性質沒有明顯變化,完全符合它在工業上應用的要求,冰洲石的顏色改善取得了明顯的效果。The experiments show that the color of the iceland spar can be changed when heated to a certain temperature, that is, light yellow iceland spars will fade when heated to 360 - 370, while dark yellow iceland spar will fade at 440 - 450, brownish yellow iceland spar at 460 - 470 ; and the color of light purple iceland spar can be removed when heated to 390 - 400, while the color of deep purple iceland spar can be removed at 440 - 450, deep reddish purple iceland spar at 460 - 470. on base of the u - v absorption spectrum, we find that the u - v absorption spectra of the faded iceland spars are paralleled to the x axis, the transmittance of them are also greatly improved
實驗表明,冰洲石在加熱到一定溫度時顏色會發生變化:淺黃色、深黃色和褐黃色冰洲石分別在360 - 370 、 440 - 450和460 - 470完全褪色;淺紫色、深紫色和深紫紅色冰洲石分別在370 - 380 、 440 - 450和460 - 470時完全褪色。通過對褪色后冰洲石進行紫外-可見光吸收光譜測試表明:完全褪色后的冰洲石在紫外-可見光的吸收光譜上表現為一條近平行x軸的直線;紫外、可見光區的紫區的光透過率有了很大了提高。Sellmeier coefficients for the refractive indices of calcite at crystal different temperatures
冰洲石晶體色散方程解析研究及折射率溫度系數表達式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
但由於通常使用的冰洲石晶體是一種天然晶體,純凈的晶體很少,且不易得到大塊,所以晶體起偏鏡不容易做成大口徑,且價格高,加工工藝復雜。If they had instead found crystalline rock, like that underlying most continental ice sheets, including east antarctica ' s, they would have concluded that the greater friction of that material had been inhibiting ice motion
反之,若冰原底下是晶狀巖石,如同南極洲東部及多數大陸冰原的情況,可能就會因摩擦力較大而阻止積冰移動。No well - preserved bodies had ever been found in europe from this period, the neolithic, or new stone age
冰人生活在新石器時代,歐洲從未發現過保存得那麼好的新石器時代遺骸。分享友人