查询词典 quartz clock

The result of infrared spectrum contrast analysis with standard quartz, agate and opal shows that the main mineral composition of Chaoyang petrified wood is quartz, a natural petrified organic jewel, which has a bright future in development and application.

通过与标准石英、玛瑙和蛋白石的红外光谱对比分析，研究结果表明朝阳硅化木的主要成份为石英，属天然石化型有机宝石，开发利用前景十分广阔。

In this paper,the basic features of quartz and the theoretic basis for quartz to be taken as a tracer for material source are summarized,and the material source tracing methods to use scanning electron microscope,mass spectrometer,electron spin resonance and cathode luminescence and the feasibility of these methods are introduced in detail.

综述了石英的性质和它作为有效指示剂来示踪物源的理论基础，进而详细介绍了使用扫描电镜、质谱、电子自旋共振和阴极发光等仪器对石英矿物的表面微结构、氧同位素比值、形成年龄和阴极发光颜色等特征进行研究来追踪物源的方法以及这些方法的可行性。

The calcium sulfate was dissolved and led to the rapid increase of calcium ion concentration in the solution. So the calcium sulfate is not suitable for being seed crystal of low-salt concentration. The quartz sand and calcium carbonate both can be used as seed crystals, but it is much faster and more complete to use calcium carbonate as seed crystal compared with using quartz sand.

当硫酸钙加入处理液中发生了硫酸钙溶解现象，导致溶液钙离子浓度迅速增加，故硫酸钙不适合做低浓度盐水的晶种，而石英砂和碳酸钙均能对钙离子的结晶起到效果，但碳酸钙做晶种对钙离子的结晶更快捷、更彻底，在条件允许的情况下，采用碳酸钙做晶种为宜。

XLP/A Cyclone dust collector is used to purify dusts such as tobacco、pencil stone、quartz、coal、pottery clay、casting sand、quartz sand、cement and etc.

XLP/A型旋风除尘器适用于净化烟草、滑石、石英、煤炭、陶土、铸砂、石英砂、水泥等粉尘。

The proper alkaline content was in favor of compressive strength. The chemically combined water of paste without activator decreases with the increase of fly ash content, the content of Ca2 decreases after 28d. The increase extent of chemically combined water of pastes with NaOH is higher than that of without activator, and the paste with Ca2 is the same. The XRD peak of Ca2 of paste without activator is high at early age, and the peak of mullite and quartz has less change along with age. When NaOH is added, the peak of quartz of fly ash has clear drop. The surfaces of fly ash activated has eroded trace at 7 d.

研究结果表明：适量碱的掺入对强度有利；未掺激发剂浆体的化学结合水量随着粉煤灰掺量的增加而减少，Ca2含量在28d后开始下降；掺NaOH浆体的结合水量随龄期增长的幅度比未掺激发剂的浆体的大，而掺Ca：试样变化较小；未掺激发剂的水泥－粉煤灰体系在早期Ca2的峰值较大，且粉煤灰中的莫来石和石英晶体的衍射峰随龄期变化不大；NaOH掺入后，28d时，粉煤灰中的石英晶体衍射峰明显下降；时于掺激发别的试样，在7d时粉煤灰颗粒表面已被腐蚀。

There are a number of amphiboles developed in metamorphic rocks in sands, and the oxygen isotope compositions of quartz in dune sands and similar to that of metamorphic quartz.

沙物质和岩浆岩在所含角闪石种类以及普通角闪石化学成分上的差异性明显大于相似性，说明后者为前者提供的角闪石有限。

Laboratory ware made from fused quartz and fused silica; beakers made from fused quartz

石英玻璃和石英材料制实验仪器。石英玻璃烧杯

In the paper the main topics are:(1) to analyze the chemistry composition, the X-ray diffraction, the DTA, and the functions of all raw materials;(2) to define the best direction for producing glass and foam glass, and the best burning technical process;(3) to characterize the unit weight and thermal conductivity of foam glass;(4) to analyze the reason of bubbling up, including the influence factor of temperature, time and so on;(5) to discuss the reasons of leading to shortcomings.There is high content quartz (SiO2) in the two gangues from gold mine and potassium feldspar mine respectively. They can be used to prepare glass, because the quartz (SiO2) is the main raw material.

论文的主要内容包括：1、对矿山尾矿的湿化学分析，粒度、X射线衍射和热稳定性的分析，以及硼砂、碳酸钙及制备泡沫玻璃的玻璃粉、磷酸钠实验原料在实验中的作用进行分析；2、确定尾矿烧结成玻璃体和利用玻璃体烧结泡沫玻璃的最佳配方以及两次烧结的最佳烧成工艺条件；3、泡沫玻璃制品的体积密度和导热系数等物理性能的测定；4、泡沫玻璃的发泡机理分析，包括发泡温度、发泡时间、发泡剂的用量、稳定剂的用量及其它因素对发泡作用的影响；5、讨论造成泡沫玻璃成品各种缺陷的原因及其解决方法。

The rock gold deposits born in Pre-cambrian system stratum and performed as bed-bear ing quartz vein, shear-quartz vein, stringer vein. alteration host rocks and tectonic breccia etc. and embraced with many ascepts of common metallogenetic geology characteristics, not only have the obvious and close distributional relationship on tectonic zones, but also share possibly the same genetic mechanism.

研究表明，产于前寒武系地层中，以层间石英脉、剪切石英脉、石英细脉、蚀变围岩、构造角砾岩等多种型式产出的、具有很多共性成矿地质特征的岩金矿床，不仅具有明显密切的空间展布关系，而且更重要的是它们可能具有某种深刻的内在共性成因联系。

Gold occurs mainly in pyrite-sericite-quartz rocks and pyrite±polymetallic-sulphides+quartz±carbonate veins and stockworks, forming veinlet-disseminated ores.

金主要产于黄铁绢英岩和黄铁矿±多金属硫化物+石英±碳酸盐脉-细网脉中，构成细脉-浸染状矿石。

A small, rubber-headed hammer used in examination or diagnosis by percussion.

叩诊槌用在通过''。'振荡'。''所作的检查或诊断中的橡皮头的''。'小'。''槌

Affixes are limited in number in a language, and are generally classified into three subtypes, namely, prefix, suffix, and infix, depending on their position with reference to the root or stem of the word.

语言中词缀的数量总是有限的，根据它们跟词根或词干的相对位置，一般可以把词缀分外三小类：前缀，后缀和中缀。