查询词典 quartz

They have A/CNK values of 0.9～1.2, suggesting aluminum saturation or ersaturation, and are enriched in LREE and LILEs and depleted in HFSEs. Their δEu values are 0.11～0.32, evidently indicating plagioclase fractional crystallization.(87Sr/86Sr)i ratios and εNdvalues are 0.707?9～0.716?1 and -6.90～-7.70 for volcanic rocks, and 0.7086～0.7098 and -7.10～-7.68 for quartz syenitic porphyrite, respectively, implying that all the igneous rocks from the Yandang Mountain were evolutional products of co-magmas, and derived mainly from the crust, mixed however with mantle components.

岩石富集轻稀土元素和大离子亲石元素，相对亏损高场强元素；δEu值为0.11～0.32，表明岩浆经历了以斜长石为主的强烈结晶分异作用；火山岩(87Sr/86Sr)i为0.707 9～0.716 1，εNd为-6.90～-7.70，中央侵入体石英正长斑岩(87Sr/86Sr)i为0.708 6～0.709 8，εNd为-7.10～-7.68，表明它们是同源岩浆不同阶段分异演化的产物，物质来源主要为陆壳，但也有地幔物质参与。

To a radius of 50 km for Peixian, the distribution is rich in limestone, dolomite, kaolin, potash feldspar, quartz sand and other minerals.

以沛县为半径50公里内，分布着丰富的石灰石、白云岩、高岭土、钾长石、石英砂等矿藏。

Acidic rocks have a silica content over 70 % Granite is the typical example of acidic intrusive igneous rock, which is composed mostly of potash feldspar, quartz and minor mica.

岩石中Si02含量大于70%时，称为酸性岩，花岗岩就是酸性侵入岩石的一个典型例子，它的矿物成分主要是钾长石、石英以及少量云母

The results show that the mineral phases of coal ashes which are ashed at 815℃ mainly include quartz, anhydrite, hematite, portlandite, lime and potash feldspar.

结果表明，815℃煤灰的主要晶体矿物质组成为石英、硬石膏、赤铁矿、氢氧钙石和石灰等。

Company main products are: talcum powder, calcite, potash feldspar, fluorite, chlorite, dolomite, quartz sand, limestone, light burning magnesium, re-burned magnesia, fused Magnesium and other non-metallic mineral products and chemical products.

公司主要经营的产品有：滑石粉、方解石、钾长石、萤石、绿泥石、白云石、石英砂、石灰石、轻烧镁、重烧镁、电熔镁等非金属矿产品和化工产品。

It is powered by quartz movement and is water resistant to 165 feet.

它是由石英机芯，并防水165英尺。

It is composed of dual-packer, down hole pump, quartz pressure gauge, etc.

以DFT随钻地层测试器为例介绍了它的基本原理和技术应用情况。

This company is specialized in producing quartz.

本公司是生产石英玻璃制品的专业公司。

A light disk suspended from a quartz thread; when exposed to a progressive sound wave its torque can measure velocity.

用石英线悬挂的光盘；当遇到前进的声波时它的扭矩可以测量速率。

A: Quartz is almost pure SiO2, while pyrex is SiO2 with trace amounts of other elements.

石英玻璃的成分几乎是纯二氧化硅（ SiO2），而派热克斯玻璃是二氧化硅与其它微量元素（ Ca， K， B 等）。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。