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| By means of engineering examples, a comparison is made on the economy and environmental protection for four cooling and heat sources, including gas direct-fired machine, centralized heat-supply plus electric refrigerating, gas boiler plus electric refrige |
中文意思：
通过工程实例，对以燃气直燃机、集中供热＋电制冷、燃气锅炉＋电制冷、空气源热泵＋燃气调峰锅炉4种冷热源的经济、环保性进行了比较。 |
以下为相关句子列表(点击查看，可以看对应的解释）：
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By means of constructional iterative equation, this paper presents a way to give out the existence and singularity of a type of equational root with gradual approach method.
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摘要本文通过构造迭代函数，利用逐次逼近的方法给出了一类方程根的存在性与唯一性的判断的一种解决方案。 |
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By means of cultural heritage data, questionnaire, investigation, observation etc. this thesis analyses the factors influencing the aerobics exercise for boy-students at athletic educational speciality at the colleges of Henan province and put forward som
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摘要通过文献资料、问卷调查、观察等研究方法对高校体育教育专业男生健美操学习的影响因素进行分析，并提出促进男生学习健美操的一些建议，以期为健美操的普及与发展提供参考依据。 |
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By means of determining the mature and quantities of distribution, assemblage and transfer layers in distribution system, the conclusion is made that in perfect situation, the optimal distributing construction depends on distance and density of requiremen
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通过对配送系统运作中的分货、集运与运输中转分层的定性与定量分析，从而得出在理想的状态下，运输最优的配送结构主要取决于距离和需求点密度的结论，并给出了实际问题中结合经济规模确定最优层次的方法。 |
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By means of discussing plane symmetry that relates to point, curved surface and curve in a three-dimensional space, this paper gives a method to study point、curved surface、plane symmetric point on a curve、symmetric curved surface and symmetric curve equat
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摘要讨论了三维空间中，点、曲面、曲线关于平面的对称问题，从而给出了求点、曲面、曲线关于平面对称的对称点、对称曲面、对称曲线方程的方法。 |
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By means of documentary, psychometrics, experiment, expert consultation and statistics, this paper carries out experimental research of effect of soccer and table tennis exercise on children's attention concentration.
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摘要运用文献资料法、心理测试法、实验法、专家咨询和数理统计法，研究了足球与乒乓球锻炼对小学生注意集中性的影响。 |
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By means of engineering examples, a comparison is made on the economy and environmental protection for four cooling and heat sources, including gas direct-fired machine, centralized heat-supply plus electric refrigerating, gas boiler plus electric refrige
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通过工程实例，对以燃气直燃机、集中供热＋电制冷、燃气锅炉＋电制冷、空气源热泵＋燃气调峰锅炉4种冷热源的经济、环保性进行了比较。 |
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By means of equivalent transformation of conjugate condition, the conjugate mapping proc ess is separated from the concrete forms of generator and conjugate movement th us achieved intellecturalization and automatization of synthesis of conjugate cu rves.
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通过共轭条件的等价变换，将共轭映射过程与母曲线及共轭运动的具体型式隔离开来，从而达到共轭曲线综合的智能化、自动化。 |
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By means of ethnology and ecological theory, the article has launched the preliminary discussion on the traditional ecological culture of Miao ethnic group from three aspects such as idea, system and material.
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摘要运用民族学和文化生态学的理论与方法，从观念层面、制度层面、物质层面三个方面，对苗族的传统生态文化展开了初步探讨。 |
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By means of experiment the distribution of the non-uniformed magnetization of the magnetic ring of permanent magnetic bearing was measured, and the influence of magnet clearance on non-uniformed magnetization was analyzed.
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摘要通过试验测量了永磁轴承磁环不均匀磁化的分布，分析了磁体间隙对不均匀磁化的影响。 |
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By means of field monitoring the strain in beam slab of partial building floors of a typical super-length prestressed floor slab after a period of their prestressing, the variation of stress with the temperature at different monitoring locations was given
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摘要通过对一典型超长预应力楼盖的部分楼层梁板在施加预应力后一段时间内应变的现场监测，给出了不同位置测点应力和温度的变化曲线。 |
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By means of fluorescence effect, the ancient oceans, modern oceans and future oceans are presented true to life.
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通过荧光的效果将远古海洋、现代海洋以及未来海洋的景象栩栩如生地展现。 |
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