石英

Since olivine is silica-unsaturated, quartz and olivine never coexist in the same rock. Therefore, in mantle peridotite and other ultramafic rocks, primary quartz can never be found.

由于石英和非饱和SiO_2的橄榄石不能共生，因此在地幔橄榄岩和超镁铁岩中不存在原生石英。

The QVBA key micro-machined technology are also developed in this paper, such as: single step double sides multilayer photolithographic process, quartz crystal anisotropic etching process.

在仿真分析基础上，完成了石英振梁加速度计的设计及关键微加工工艺研究，包括：单步双面多层光刻工艺、石英晶体各向异性刻蚀工艺等。

Our company was established in 1992, and one of the major quartz glass manufacturer in China.

锦州新世纪石英玻璃有限公司座落在辽宁省锦州经济技术开发区，与中国北方的大型国际口岸锦州港相邻，公司始建于一九九二年，是中国主要石英玻璃生产企业之一。

Annual output of various sizes of quartz glass tubes and other quartz glass products total more than 1,000 tons.

年产各种规格石英玻璃管及其他石英玻璃产品共1000余吨。

Is currently the quartz glass manufacturing enterprises in the production of the largest varieties, more complete testing means and quartz glass with an integrated processing capacity of enterprises, product quality in the domestic same industry leading level.

是目前国内石英玻璃生产企业中产量最大、品种多、检测手段较为完备并具有石英玻璃综合加工能力的企业，产品质量在国内同行业中处于领先水平。

Lianyungang Fudong are you lighting Electrical Appliance Co., Ltd. is a transparent quartz glass tube, one of the major manufacturers, but also the nation's largest private manufacturer of quartz glass products.

连云港福东正佑照明电器有限公司是国内透明石英玻璃管的主要生产厂家之一，也是国内最大的民营石英玻璃产品生产企业。

With UV lamps, quartz tube, and wash rack structure; the entire module for the stainless steel stent; tube and parallel to the direction of flow; modular stent design to prevent accidents when the ultraviolet radiation outside the channel; replacement lamp or quartz sleeve Each module can be individually lifting

含紫外灯、石英套管、机架及清洗结构；整个模块支架为不锈钢材质；灯管与水流方向平行；模块支架设计能防止发生意外时紫外线辐射到明渠外；在更换灯管或石英套管时，每个模块可单独起吊

A spectrometer method for determining the thickness of quartz plate along the crystal axis is presented based on the optical rotatory dispersion effect of the quartz.

基于石英晶体的旋光色散原理，提出了一种测量石英晶体光轴方向厚度的光谱分析方法。

Its operating principle is analyzed by means of matrix formulation, and the result indicates that the thickness of the quartz plate along the crystal axis will be exactly obtained by accurate judgment of the transmission curve of a quartz plate sandwiched between two crossed polarizers.

利用光学矩阵方法对测量原理进行了分析，指出通过测量由两个正交的偏光镜和待测石英晶体所组成的系统的透射曲线就可以精确计算出待测石英晶体的厚度。

Plate and λ/2 plate were placed inside the Nd∶YVO4KTP green laser cavity with angle 90°between their fast axis.The composite plate composed of HWP,QWP and KTP has the function of QWP.The composite plate with Nd∶YVO4 can effectively suppress the coupling of polarized modes,and multi-longitudinal-mode lownoise green laser was obtained.Since the composite plate counteracted the phase shift induced by temperature sensitivity of quartz plate,the green laser operated with lownoise reliability in different output power and different operation temperature.The threelongitudinalmode, the noise of less than 0.5% and output power stability of less then 1% for 12 hour are obtained in the green laser.

介绍了一种LD泵浦腔内倍频全固体Nd∶YVO4KTP多纵模、低噪音、高功率稳定绿激光器在Nd∶YVO4KTP绿激光器组成的谐振腔内放置厚度约相等的石英晶体λ2波片和λ4波片，使两波片快轴夹角互呈90°，HWP、QWP与KTP构成复合波片，其作用相当于QWP，此复合波法与各相异性Nd∶YVO4共同作用有效抑制了腔内偏振模耦合，获得多纵模低噪音绿光输出此复合波片相互作用由于抵消了石英晶体波片温度敏感引起的相位延迟量漂移，所以此激光器在不同功率、不同工作温度下，均能稳定可靠地运转于低噪音状态实验结果为，绿光输出纵模数为3个，噪音小于0.5%，12 h功率稳定性优小于1

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。