quartz-
Quartz timepieces are very accurate , to a minute or two per year .
石英钟表走时非常准，年误差仅为一两分钟。
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The quartz watch keeps good time .
石英表走时准。
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To this class of substance belong mica , porcelain , quartz , glass , wood , etc.
属于这类物质的有云母、瓷器、石英、玻璃、木材等等。
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Today , quartz crystal clocks are generally used on the seismograph stations .
目前，地震台站一般采用石英晶体钟。
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The prospectors have discovered such minerals as calcite , quartz and asbestos here .
探矿人员在这里发现了方解石、石英、石棉等矿藏。
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The cardium sandstone is lithic , being composed of grains of chert , quartz , quartzite , silicified argillite , and other rock fragments .
卡迪砂岩是岩屑砂岩，由燧石，石英、石英岩、硅化泥板岩和其它岩石碎屑颗粒所组成。
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In 1927 , the first quartz clock was developed .
1927年，第一台石英钟问世。
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There is a great deal quartz in those mountains .
那些山里蕴藏着大量石英。
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A Quartz Rotational Rate Sensor and Its Application System Design
石英转速传感器及其应用系统设计
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Study on the High Temperature Softening Property of Quartz Glass Tube
石英玻璃管的高温软化性能研究
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Effects of Technology Parameter on the Properties of Quartz Ceramic
石英陶瓷的工艺参数对性能的影响
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Development and Application of Measurement Instrument Based on Quartz Crystal Microbalance
石英晶体微天平的测量仪的研究及应用
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Study on the performance of filtration by uniform quartz sand media
石英砂均质滤料过滤性能的试验研究
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Calculation Hygienic Standard of Dust concentration by Quartz Dust Comparison Method
石英粉尘比较法推算粉尘浓度卫生标准的研究
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Study on surface modification of quartz sand with iron oxide
氧化铁对石英砂表面改性的研究
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An Experimental Studies on Preparation of Porous Ceramics with Powder Quartz
用粉石英烧制多孔陶瓷的实验研究
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Research on Quartz Tube Dimensions Photoelectric Comprehensive Measuring System
石英管尺寸光电综合检测系统的研究
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Development of piezoelectric quartz crystal biosensor 's application research
压电石英晶体生物传感器应用研究进展
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Review of stress frequency effect of quartz crystal resonators and its applications
石英晶体谐振器的力&频效应及其应用
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The method of on line measurement and control of quartz powder purity was introduced .
主要介绍了生产线上对石英粉纯度实施检测与调控的技术路线和方法。
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Study on Measuring the Thickness of Car - light Coatings with Quartz Crystal
晶振法测试车灯反射镜膜厚研究
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Application of Inclusion Studies to Ore Potential Evaluation of Gold Quartz Veins
包裹体气液相成分在石英脉体含金性评价中的应用
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However , no fluoride removal effect was observed by using quartz sand .
石英砂对水中的氟无任何去除效果。
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Technology of making magnetic ring of quartz clock with hot pressing casting method
热压铸法制造石英钟钟表磁环的工艺研究
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Determination of trace metallic elements in quartz inclusions using chemical spectroscopy
化学光谱测定石英包裹体中微量金属元素
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Contamination monitoring techniques using quartz crystal microbalance in space environmental simulating test
石英微量天平在环模试验中的污染监测技术
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Characteristic analysis of quartz deformation by shock loading
冲击石英形变特征分析
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Research on Measurement Instrument with High Frequency and Precision for Electric Parameters of Quartz Crystal Units
高频高精度石英晶体元件电参数测量技术研究
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Compressive strength development of complex binder containing fly ash or quartz powder
含粉煤灰或石英粉复合胶凝材料的抗压强度发展规律
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Study on mechanical properties of super-fine quartz powder / ldpe composite
超细石英粉/LDPE复合材料的力学性能研究