石英

The results show that the optimum mole percent of Al3+ to Yb3+ is 9—11 for high concentration of ytterbium-doped silica-based fiber at which low concentration quenching probability, high absorption coefficient and proper numerical aperture can be obtained.

揭示出在高掺Yb3+的石英基光纤中，共掺Al3+的摩尔浓度为Yb3+摩尔浓度的9—11倍时既可以减小Yb3+的浓度猝灭概率，又可以获得高吸收系数，同时还可更好地满足数值孔径的要求的结论。

Agate is the banded form of Chalcedony (also spelt Calcedony, it is the catch all term for cryptocrystalline Quartz) and its name was derived from the site of its discovery, the river Achates in southwest Sicily.

玛瑙是一种纤维状玉髓晶体（英语也拼写为 Calcedony ，为隐晶石英的统称）。英文名源于发现地-西西里西南部埃格特兹河。

Through electron probe\'s analysis to the albite jade, union grinding sample thin slice under polarizing microscope observation as well as X powder crystal diffraction data analysis. Discovery like Chen zhenqiang and "System Gemology" said that secondary mineral for actinolite, green mudstone, epidote and quart.

通过对钠长石玉进行电子探针的分析，结合磨制的样品薄片在偏光显微镜下的观察以及X粉晶衍射数据分析，可知钠长石玉中的主要成分为钠长石，次要矿物为硬玉、角闪石、绿辉石、钠铬辉石；并未发现如陈振强等人以及《系统宝石学》中所说的次要矿物为阳起石、绿泥石、绿帘石、石英。

The two different kinds of schemes for silica fiber poling,adulterant and/or photoinducing and electrical poling,are discussed in the paper.

首先讨论和比较了两种不同诱导石英光纤的方案，即掺杂物和／或光诱导方案及电场诱导方案，分析了它们各自的特点，在此基础上提出了一种新的诱导方法。

The high-silica glass with SiO〓 content more than 96% are similar in many kinds of properties to pure silica glass.

高硅氧玻璃中SiO〓含量超过96％，性能接近纯石英玻璃，因此高硅氧玻璃在多种用途上可替代石英玻璃。

Leading products: refining quartz sand, fused silica, microsilica, green and black sand particle size, such as silicon carbide.

主导产品有：精制石英砂、熔融石英、硅微粉、绿色和黑色碳化硅粒度砂等。

This is clear fused quartz glass tube available as continuous machine drawn and automatic controlled tubing .this glass has the typical characteriastics of high purity ,good spectral transmission,weellcontrolled dimension and lower OH and so on .it serves as the first choice of heat resistant material for halogen lamps ,mercury lamps ,metal halide lamps and other quartz lamps .this glass can be supplied in the range of 3-80mm outside diameter,0.6-2.0mm wall thickness and 1200-1500mm length.

采用先进的连熔法生产技术，结合有效的自动控制系统生产出的透明石英玻璃管，具有纯度高，透射性强，尺寸控制严格，羟基含量低等特点，是卤素灯、汞灯、金卤灯和其他石英灯的首选抗高温材料，本公司生产的主要尺寸为外径3-80mm，壁厚0.6-5.0mm，长度1200-1500mm。

This is clear fused quartz glass tube available as continuous machine drawn and automatic controlled tubing. This glass has the typical characteriastics of high purity, good spectral transmission, well controlled dimension and lower OH and so on. It serves as the first choice for heat resistant materials for halogen lamps, mercury lamps, metal halide lamps and other quartz lamps. This glass can be supplied in the range of 3-80mm outside diameter, 0.6-2.0mm wall thickness and 1200-1500mm length.

采用先进的连熔法生产技术，结合有效的自动控制系统生产出的透明石英玻璃管，具有纯度高、透射性强、尺寸控制严格，羟基含量低等特点，是卤素灯、汞灯、金卤灯和其他石英灯的首选抗高温材料，本公司生产的主要尺寸为外径3-80mm，壁厚0.6-2.0mm，长度1200-1500mm。

In this paper, the method of measuring TL dating for fine-grain quartz pre-dose technique is introduced and the influences of different sizes of fine-grain guartz on the thermoluminescence dating of guartz pre- dose technique is researched.

本文介绍了用石英粉末进行前剂量热释光效应的测量方法，并就不同粒度的石英样品对其110℃峰的TL响应的影响进行了专门研究。

Can not be scratched Quartz that its quartz content is up to 93%, quartz crystal is a natural second only to diamonds in hardness, natural minerals, the surface hardness of Mohs' scale of hardness 7.5, is much larger than the kitchen knife used in the shovel and other weapon, will not be scratched injury.

石英石其石英含量高达93%，石英晶体是自然界中硬度仅次于钻石的天然矿产，其表面硬度可高达莫氏硬度7.5，远大于厨房中所使用的刀铲等利器，不会被其刮伤。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。