石英的

The principles and a description of the main parts of the new instruments are as follows :(1)By means of a fused quartz mirror system and mercury horizon(shown in fig.4),a telescope with a fixed glass grid,three photomultipliers with respective a.c.amplifiers and a time recorder,the astrolabe can determine the time of almu- cantar transit of a star ...

新仪器的特点如下：(1)借助熔石英角镜组和汞地平、一架望远镜和固定的玻璃记录栅、三个光电倍增管及其交流放大器和一架计时仪，此仪器能无人差地测定星过等高圈时刻。

Cryptocrystalline Quartz includes species whose individual crystals are too small to be easily distinguished.

隐晶石英指的是单晶体微小极易辨别的所有种类。

Based on the research performed on its temperature characteristics, and the quartz resonant force sensor's self—temperature—testing method of employing the beat frequency is presented.

研究了传感器的温度特性，并在此基础上提出了利用差值频率实现石英谐振式传感器温度自测的方法。

To talc porcelain ceramics for daily use, high-quartz porcelain, color porcelain, bone china, such as synthetic represented, forming a distinctive feature of Zibo; building ceramics become the second largest production base; to engraved ceramic art ceramic art, as represented in the sea unique both inside and outside.

日用陶瓷以滑石瓷、高石英瓷、色瓷、合成骨质瓷等为代表，形成了鲜明的淄博特色；建筑陶瓷成为国内第二大生产基地；以刻瓷艺术为代表的艺术陶瓷在海内外独树一帜。

The testing results show that the average Mohs hardness of the samples is up to 4.45 and the average density is up to 2.7485 g/cm^3, where the major mineral is sericite with small scaly structure and orientational arrangement, and the other minerals are quartz, chlorite and a small quantity of zircon, orthoclase, kaolinite and bornite, etc.

测试结果表明：样品的平均摩氏硬度为4.45，平均密度为2.7485g/立方公分；其主要矿物为绢云母，呈细小鳞片状结构，定向排列，还含有石英、绿泥石以及少量的锆石、正长石、高岭石和斑铜矿等。

If the crystal forms of quartz and calcite are perfectly preserved, it is always easy to distinguish one from other.

如果石英和方解石的晶形保存完好，那么鉴别它们是较容易的。

The thermal stability and structure of tungsten-tellurite glass were determined by means of differential scanning calorimeter and Raman spectra.

尤其是，在1 600nm波长附近，Er3+离子在碲化物玻璃中的受激发射截面是氟化物和石英玻璃的2倍[1，2]。

MIA said earlier this month:"We fear it is no coincidence that Cambria and Silestone both issued advertisements and announcements in the last week that their products are certified to be radon-free – just as the public furore over this issue boiled over."

美国大理石协会在这个月早些时候说："石英制造商在上个星期发布的广告和宣言，宣称它们的产品完全没有氡辐射。显然在这个敏感时候，发布这个宣言我们觉得并不是巧合。"

Based on the analysis of stoving temperatures of the furnace on practical use, it is conducted that for amino-alcoholic acid paint a proper arrangement of SHQ quartz glass tube and high quality carborundum plate can provide an ideal solidifying and stov...

综合分析了这类烘道在实际使用中的烘温曲线，并得出结论：对氨基醇酸漆而言，合理布置SHQ石英管和优质碳化硅板，就能得到理想的固化烘道，其烘温曲线为正态分布。

By taking granite porphyry from the Jiama Porphyry Copper Deposit in Tibet for example, this paper briefly introduces the image characteristics of scanning electron microscope cathodoluminescence and optical microscope cathodoluminescence, and summarized the application of quartz cathodoluminescence in study of igneous rock.

文章以甲玛斑岩铜矿床中岩体样品分析为例，简要介绍了光学显微镜阴极发光和扫描电镜阴极发光两种图片的特点，并综述了石英阴极发光在火成岩研究中的应用。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。