石英

Later in the eighteenth century the English further improved upon the recipe for porcelain when they invented bone china by adding ash from cattle bones to clay, feldspar, and quartz.

后来在十八世纪的英国进一步改进的诀窍时，他们发明的瓷器骨瓷，增加灰牛的骨骼，以粘土，长石，石英。

High quartz ceramics for daily use, talc quality porcelain, synthetic bone china, such as Zibo independent development.

日常使用的，滑石质量瓷，如淄博自主开发人造骨瓷器，高石英陶瓷。

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。

According to the principle of A-O interaction and quartz′s different characteristic in the direction of parallel and perpendicular acoustics field, with a quarter-wave plate being inserted in an AO Q-switch Nd∶YAG laser cavity between mirror and Q-switch, AO Q-switch′s Bragg diffraction efficiency formula is put out theoretically. Consequently, the conclusion has been drawn by calculating simulation that the ability of a single AO Q-switch′s switching CW Nd∶YAG laser is increased.

结合声光相互作用理论和声光介质熔石英在平行和垂直于声场的两个方向具有不同声光优值的特性，理论推导了腔内引入四分之一波片后声光Q开关的布喇格衍射效率公式，计算模拟得出引入四分之一波片能够有效地提高声光Q开关关断连续Nd∶YAG激光的能力。

According to the principle of A-O interaction and quartz＇s different characteristic in the direction of parallel and perpendicular acoustics field, with a quarter-wave plate being inserted in an AO Q-switch Nd : YAG laser cavity between mirror and Q-switch, AO Q-switch＇s Bragg diffraction efficiency formula is put out theoretically.

结合声光相互作用理论和声光介质熔石英在平行和垂直于声场的两个方向具有不同声光优值的特性，理论推导了腔内引入四分之一波片后声光Q开关的布喇格衍射效率公式，计算模拟得出引入四分之一波片能够有效地提高声光Q开关关断连续Nd：YAG激光的能力。

Ethanol vapor was introduced into the fluidized-bed from a temperature-controlled bubbler by the flow of Ar.

该方法是让AR气流直接携带乙醇蒸汽进入反应器，用流化床反应器代替石英舟，使乙醇蒸汽与催化剂混合更加均匀，有利于SWCNTS的生成。

This invention discloses a new technology for preparing rear earth ionic doped fiber prefabricated rods with DC-RTA technology in a sol-gel method including preparing sol containing necessary doped ions, coating said sol uniformly on the inner wall of the quartz glass tube and burning it under high temperature to coagulate and vitrify them to a doped layer and repeating the above process to form a fiber prefabricated rod by oxygen and hydrogen flame after the doped layer reaches to a designed thickness and the fiber prefabricated rod can be made to various rare earth ionic doped fibers by an ordinary drawbench technology.

本发明属于光纤制造和光纤激光技术领域，具体公开了一种利用溶胶凝胶方法中的DC-RTA技术制备稀土离子掺杂光纤预制棒的新工艺。该工艺步骤包括预先配制好含有所需掺杂离子的溶胶，将该溶胶均匀涂覆在石英玻璃管的内壁后高温灼烧，使之凝结并玻璃化为一层掺杂层。反复上述涂覆灼烧过程，在掺杂层达到设计厚度后由氢氧焰高温收棒形成光纤预制棒。该方法所得到的光纤预制棒可以通过普通拉丝工艺拉制成各类稀土离子掺杂光纤。

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。

They are mainly composed of diopside,calcite and quartz.

矿石主要由透辉石、方解石和石英等组成。

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。