石英质

Analyses of the sedimentary textures and structures, ecological features of the faunas, stratigraphic distribution and occurrence environment of radiolarian cherts indicate that the Weimei Formation belong to littoral-neritic sediments as is the case with the quartz sandstone at the top of the Menkadun Formation deposited synchronously with it.

对维美组的沉积结构，构造，动物群生态特征，地层展布情况和放射虫硅质岩的产出环境等进行了分析，认为维美组与其南部的同期沉积门卡墩组顶部石英砂岩一样，同属典型的滨浅海沉积，晚侏罗世康马-隆子和北喜马拉雅地层分区为统一的滨浅海，不存在次深海—深海环境。

The gangue mineral mainly consists of quartz and sericite, and then some calcite, dolomite, chlorite and peat.

脉石矿物主要是石英、绢云母，其次为方解石、白云石、绿泥石、泥炭质。

Calculation of loss and gain of components in parentage and altered rocks during metasomatism, reveals that, in rubification and afforestation belts, the components brought in were K〓, CO〓, H〓O, and the components brought out were SiO〓, Ca〓 and Na〓, implying that the early ore-bearing hydrothermal fluids were rich in CO〓 and H〓O. SiO〓 brought out from potassic and chlorite alteration zones could serve as the main source for SiO〓 necessary in the formation of quartz veins, of silicification and of bericitization at shallow depth.

说明早期成矿流体为富含CO〓、H〓O等的碱性流体，其中钾化、绿化带中带出的SiO〓等是浅部石英脉、硅化、绢英岩化中硅质的主要来源，带出的Ca〓与成矿流体中的CO〓结合形成碳酸盐化，带出的Na〓则在浅部形成钠长石脉。

With the decreasing temperature, the solubility of the other components in sillimanite decreased and most of the dissolved components were exsolved, resulting in the formation of the exsolution texture.

南极拉斯曼丘陵长英质片麻岩中的粗粒夕线石可能有内部出溶现象，出溶形成的矿物有磁铁矿、钛铁矿-赤铁矿和石英出溶矿物条纹，并有少量的斜方辉石。

Based on the study of mineral crystallization sequence, solidus temperature and growth rates of quartz and albite, it suggests that Li_F_Na enriched granitic residual magma is qualified for the formation of snowball texture, and that high_ratio of Na 2O/K 2O and contents of F and H 2O in the granitic melt are important to the formation of snowball texture.

对矿物结晶顺序、石英和钠长石的生长速率以及固相线温度的研究表明，富锂、氟、钠的花岗质残余岩浆完全具备形成雪球结构的条件。

Alkaline granitoids include alkaline and peralkaline granite, its associated katnosite and quartz syenite, and its associated and compositionally_similar alkali feldspar granite and rich_alkali meta_aluminous granite.

碱性花岗岩类包括碱性和过碱性花岗岩及与之伴生的英碱正长岩、石英正长岩，以及与之伴生并且成分相近的碱长花岗岩和富碱的偏铝质花岗岩。

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Experiment of convective drying of wet quartz sands as porous media, which had adiabatic-impermeable boundary of undersurface and convective boundary of upside, was carried out in laboratory.

本文以上边界对流传热传质边界和下边界绝热绝湿边界的含湿石英砂填充床为实验对象，进行了对流干燥实验。

Highly impure chalcedony called "the jasper", is one kind includes the impurity not opaque aphanitic quartz.

高浊玉髓称为&碧玉&，是一种包含杂质不不透明隐晶质石英。

The pebble stone chalcedony, belongs to the aphanitic quartz.

玉髓，属于隐晶质石英。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐