查询词典 quartz

The major metallic minerals and also the major gold carrier minerals are arsenopyrite and pyrite. The nonmetallic minerals are quartz and carbonate mineral.

主要的金属矿物为毒砂、黄铁矿，同时也是主要的载金矿物；非金属矿物为石英、碳酸盐矿物。

The major metallic minerals and also the major Gold carrier minerals are pyrite and arsenopyrite. The nonmetallic minerals arc quartz and carbonate mineral.

主要金属矿物为黄铁矿、毒砂，同时也是主要的载金矿物；非金属矿物为石英、碳酸盐矿物。

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。

The late rocks such as quartz syenite porphyny, aegirine augite syenite and syenogebbro were hosted in the upper middle part of Xionger Group.

晚期有石英正长斑岩、霓辉正长岩、正长辉长岩产出，赋存在熊耳群中上部。

By the single zircon U Pb dating method, the quartz syenite porphyny yielded an age of concordance (1 731±29)Ma, and the aegirine augite syenite and syenogebbro are dated upper cocordi...

应用单锆石U Pb法测定年龄，石英正长斑岩谐和年龄为( 1731± 2 9)Ma ，霓辉正长岩、正长辉长岩上交点年龄分别为( 1644± 14)Ma、( 1750± 65)Ma.1650～ 170 0Ma是碱性岩浆活动热构造事件的标志，石英正长斑岩被中元古代晚期的高山河组不整合覆盖，故以 1650～ 170 0Ma作为熊耳群的上限。1650～ 170 0Ma热构造事件是华北地块重大地质事件，有可能是进一步划分中元古代重要的年龄界限。

But make no mistake, Aventurine is certainly not glass, it is actually a much sought after member of the Chalcedony Quartz family.

但可以肯定地说，沙金石并非玻璃，她实际上是玉髓石英家族中的极品。

Onyx is a multi-colored quartz stone and bdellium is a substance from trees used for fragrant aromas.

红玛瑙是一种多种色泽的石英石，而珍珠是从树上流出来的树胶，可以用来作香料。

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。

According to the experiment above, a filter made of quartz can be used to separate cells from virus.

基于以上实验可在石英基片上制作用于分离病毒和细胞的细胞过滤器。

The major ore type is Gold bearing quartz type with poly metal sulfide containing abundant bullion and much.

矿石类型为富金银多金属硫化物含金石英脉型。

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。