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Abstract: Using furan sand to produce heavy diesel engine block and crankshaft eliminated defects of castings including “penetration/burn-in”,“shrinkage porosity”,“big dimension deviation” of cylinder block,“penetration/bum-in”,“misrun”and“run-out”of cran
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文摘:树脂砂铸造工艺应用于大型球墨铸铁件整体铸造柴油机缸体、曲轴生产上消除整铸缸体“粘砂”、“缩松”、“尺寸偏差大”及曲轴“粘砂”、“浇不足”、“漏铁液”等铸造缺陷，具有明显的效果。 |
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Abstract: Using high pressure greasing technique, the special protection grease for steel cable is poured into the flax wick of steel cable at the operation.
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文摘:采用高压注脂技术，向运行中的钢丝绳麻芯内注入专用的钢丝绳防护脂。 |
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Abstract: Using measurements, surveys and new analytical tools, an MIT-led international team is helping Chinese policy makers analyze their nation's cokemaking industry and assess potential economic impacts of strategies to clean it up.
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摘要：借助各种测量、实地调查和新的分析工具，以麻省理工学院为首的国际研究小组正在帮助中国决策者分析中国的焦炭生产行业，评估产业清洁化战略措施的潜在影响。 |
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Abstract: Using small and medium-sized test units, we inquire into the practicality and economy of pre-treatina the yellow hogwash yielded during the production of the soybean products.
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文摘:采用小型和中型试验装置利用酵母菌对豆制品生产中产生的黄泔水进行预处理，对其实用性和经济性进行了探讨。 |
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Abstract: Using the convective-dispersive equation and based on labo ratory exp eriment, the hydrodynamic dispersion coefficient of unsaturated soil is determi n ed under different inial soil water content, different manner of water infiltra t ion and fer
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文摘:用非饱和土壤水动力弥散方程及其解析解，在室内试验的基础上，研究了非饱和土壤在不同初始含水量、不同入渗方式及不同加肥方式下的水动力弥散系数。 |
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Abstract: Using the criterion of the free energy,we prove that the mechanical equilibrium condition for liquid droups on the condenser surface depends on the angle of contact (α).For α>90° the chemical potential of liquid drops on the condenser surface is
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文摘:应用自由能判据证明了冷凝器壁面液滴的力学平衡条件与接触角有关，进而证明了当壁面液滴与壁面的接触角大于90°时，冷凝器壁面液滴的化学势将小于同曲率的球形液滴的化学势；另外，在相同饱和比下，壁面液滴的临界半径也小于球形液滴的临界半径.而在接触角小于90°时，情况则恰好相反.正是由于这双重原因，使得滴状冷凝的传热性能大大优于膜状冷凝的传热性能，并由此求出了冷凝器壁面液滴的最佳接触角. |
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Abstract: Using the direct finite difference method,the formulations of phase-change heat transfer in different situations have been given.On the basis of these,a general formulation is proposed to describe the source of solidifying heat transfer.As an ex
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文摘:应用直接差分方法对相变热源项进行处理，给出了各种不同情况下的计算式.在此基础上，给出了一个通用的计算公式.最后应用该方法计算了钢液的凝固传热，计算结果与物理过程吻合很好. |
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Abstract: Using the documents and materials concerned,the study on the possibilities of developing woman 3000-meter steeplechase in China was made in following aspects: the spiritual and character factors of Chinese female athletes,the bodily form feature
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文摘:综合运用文献资料方法，对我国开展女子3000米障碍跑的可行性，从我国女子选手的精神品质因素、中长跑项目的水平与基础、我国女子中长跑选手身体形态特征以及我国开展新设项目的经验方面进行研究，并对我国开展女子3000米障碍跑项目提出看法和建议。 |
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Abstract: Using the notion of fuzzy point, the concept of weak implicative ideal is introduced, and the equivalence between fuzzy implicative ideal and weak implicative ideal, weak ideal and weak implicative ideal are also given.
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文摘:运用模糊点的概念,引入了弱关联理想的概念,给出了模糊关联理想与弱关联理想、弱理想与弱关联理想的等价关系. |
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Abstract: Using the ray-tracing method,we demonstrate that a grating-telescope stretcher is the conjugation of a grating pair compressor.We present an analytical formula for calculating the phase dispersions of the grating-telescope stretcher.The computer
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文摘:用光线追迹法论证了光栅-球面镜系统与普通的光栅对系统是一对相位共轭元件，并提出了光栅-球面镜系统色散的解析计算公式，以及对一个典型的放大系统做了模拟.模拟结果表明，对于一个放大系统，存在一个最佳的材料色散，用它可以获得最大的无色散带宽. |
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Abstract: Using the united method in this paper, the bending solution of the rectangular plate with one edge built-in and one or two corner point supported can be derived under arbitrary load.
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文摘:本文的统一解法可以解决悬臂板或带有角点支承时在任意荷截作用下的弯曲。 |
