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soil coal
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  “soil coal”译为未确定词的双语例句
     Application of Peat Soil Coal Briquette to the Production of Synthetic Ammonia (Ⅰ)
     泥炭土型煤在合成氨生产中的应用研究(Ⅰ)
短句来源
     Results:In five sources,soil,coal,limestone,metallurgical industry and motor-vehicle emissions amount to35.2%,40.80%,10.00%,10.19%and3.81%in winter;
     燃煤冬季40.80%,夏季14.26%; 建筑材料冬季10.00%,夏季16.36%;
短句来源
     Determination of Gallium in Soil, Coal Cinder and Sediment by Graphite Furnace Atomic Absorption Spectrometry with Tungsten-Coated Graphite Tube
     涂钨石墨管石墨炉原子吸收测定土壤、煤渣和河泥中镓
短句来源
     An Inquiry into the Formation of/Peat Soil Coal Bar with Adequate Mechanical Strength
     泥炭土煤棒机械强度成因探讨
短句来源
     The Analysis of Utmost Bedrock Ply at Thin Bedrock and Thick Surface Soil Coal Seam Mining
     薄基岩厚表土煤层开采的极限基岩厚度分析
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  相似匹配句对
     Coal exploitation has greatly negative influence on soil.
     煤炭资源开发对土壤环境的影响很显著。
短句来源
     FEASIBILITY STUDY ON SOIL IMPROVEMENT WITH COAL ASH
     利用煤灰进行土质改良的可行性研究
短句来源
     M,soil nutrition.
     二等{NP,NPZnK,M};
短句来源
     ⑥soil.
     ⑥土壤因素。
短句来源
     Hydrogen from Coal
     碳氢燃料规模制氢的现状及发展趋势
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The statistical basis for factor analysis is briefly discussed. A method combining common factor analysis with orthogonal transformation has been proposed and discussed in detail. The method has been tested with a data set consisted of 16 elemental concen trations in 40 samples collected at the Beijing meteorological tower, March 1980. 7 sources, soil+coal fly ash, sulfate, cement and lime dust, oil, plant burning, motor, and marine aerosol, corresponding to 7 factors have been identified and the...

The statistical basis for factor analysis is briefly discussed. A method combining common factor analysis with orthogonal transformation has been proposed and discussed in detail. The method has been tested with a data set consisted of 16 elemental concen trations in 40 samples collected at the Beijing meteorological tower, March 1980. 7 sources, soil+coal fly ash, sulfate, cement and lime dust, oil, plant burning, motor, and marine aerosol, corresponding to 7 factors have been identified and the source profiles obtained.

本文简要介绍了因子分析法的统计学基础.提出了一种因子分析与经验正交变换相结合的分析方法.用这种方法研究了1980年3月在北京北郊用条式滤膜采样仪采样,用质子荧光法进行元素分析所得到的16种元素,40个样品的资料.得到了土壤尘加燃煤烟尘、汽车废气、石灰水泥粉尘、硫酸盐、草木燃烧、石油化工和海盐粒子等7种气溶胶来源对北京北郊大气气溶胶的相对贡献以及这些源的元素成分廓线.

For overcoming the shortcomings bringing by lime briquet carbide to the production of synthetic ammonia, the authors develop new gas-producing raw material-peat soil coal briquette. A presentation is given to the mechanism of its development, technology of its make up, and its principal influencing factors. As demonstrated by experiment, to substitute lime briquet carbide by peat soil coal briquette is feasible both in technology and in economy.

介绍在合成氨生产中,泥炭上型煤的研制机理、配制工艺及影响泥炭上型煤值量的主要因素.实验证明,泥炭土型煤代替石灰碳化煤球在技术上、经济上是可行的.

To lay a foundation for the application of Pb isotope trace to differentiating among lead and relevant heavy metals in soil,air,water,human and distinguishing mobile exhaust lead pollution from industrial lead pollution,three sets of methods of measuring Pb isotope compositions in soilscoal、mobile exhausts and aerosols were estallished after a large number of comparison and conditional experiments.With these methods,Pb isotopic ratios in soils gathered from the tea gardens in Hangzhou...

To lay a foundation for the application of Pb isotope trace to differentiating among lead and relevant heavy metals in soil,air,water,human and distinguishing mobile exhaust lead pollution from industrial lead pollution,three sets of methods of measuring Pb isotope compositions in soilscoal、mobile exhausts and aerosols were estallished after a large number of comparison and conditional experiments.With these methods,Pb isotopic ratios in soils gathered from the tea gardens in Hangzhou and in coal,mobile exhausts and aerosols gathered from the vicinity were determined.The standard deviations in 2σ of()~(207)Pb/~(206)Pb of these samples are better than ±0.03%.The errors of repeated samples are better than ±0.05%.The intensities of most ~(208)Pb(ions) are higher than 1 V,some more than 8 V.The National Bureau of Standards SRM981 monitoring the(analysis) procedures gave the following result:()~(207)Pb/~(206)Pb=0.91449±0.00004,the national standard(reference) value of NBS981 is 0.91464±0.00033.Processing blanks ranged from 18 to 24ng of lead.

为给铅同位素示踪技术在判别土壤、大气、水体和人体中铅与相关重金属污染来源,区别汽车尾气铅污染和工业铅污染等方面的应用提供科学依据。通过大量的对比条件实验,拟出了土壤、煤、汽车尾气和气溶胶样品中铅同位素比值的测定方法。利用这三个流程分别测定了采自杭州茶园的土壤及茶园附近的煤、汽车尾气和气溶胶样品的铅同位素比值,其中207Pb/206Pb的精度(2σ)均优于±0.03%。重复样误差优于±0.05%2。08Pb强度一般均在1V以上,有的高达8 V以上。监控分析流程的国际标准物质NBS981的207Pb/206Pb为0.91449±0.00004。全流程本底铅为10-8数量级。

 
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