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Abstract: The ultrasonic soldering process of aluminium heat exchangers and a few important factors effecting on the soldering are reviewed.
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文摘:论述了铝热交换器的超声波钎焊工艺及其影响钎焊的几个关键因素。 |
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Abstract: The unique rheology of the lecithin-water s ystem has lead to processing difficulties in the drying of lecithin.
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文摘:水化油脚独特的流体特性导致在浓缩脱水时的困难。 |
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Abstract: The urban commerce of San Francisco has been well-developed thanks to its sound exterior environment and inner drive created by the local government, such as facilitating the transportation network for shopping, developing commercial shopping ce
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摘要：对旧金山政府推动发展交通购物网络商业购物中心、开发旅游变化亮点聚合，努力搭建旅游商业经济架构，为城市商业发展创造了良好的外部环境和内在动力。 |
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Abstract: The urban waterfront region has played an important role in the process of industrial development.
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摘要：城市滨水地带曾经在工业的发展中发挥过巨大的作用。 |
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Abstract: The utilization and the prepartion methods of 2,6-DMN are introduced.The separation and purification processes of 2,6-DMN from coal and petroleum tar are reviewed.
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文摘:本文介绍了2，6-二甲基萘的用途和制备方法；综述了从煤焦油和石油中分离提纯2，6-二甲基萘工艺。 |
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Abstract: The value objective of the construction of CPC at the grass roots level consists of two parts—elementary objective and the advanced objective.
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文摘:基层党组织建设的价值目标可分为基本价值目标和最高价值目标，最高价值目标是培养“四有”新型公民。 |
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Abstract: The various kinds of incineration facilities such as liquid injection incinerator,rotary kiln incinerator,bubbling fluidized-bed incinerator and circulating fluidized-bed incinerator used for treating high concentration of waste organic liquor a
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文摘:介绍了国内外高浓度有机废液的焚烧处理装置，即液体喷射焚烧炉、回转窑焚烧炉、鼓泡流化床焚烧炉和循环流化床焚烧炉，阐述了各种焚烧炉的工作特点，通过比较得出，鼓泡流化床和循环流化床焚烧炉在环保方面具有突出的优点。 |
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Abstract: The water-saving solar hot-water heater is improved.The replacement of the two-position water and vapour valve of the water-saving solar hot-water heater by the two position automatic prot ection valve leads to the transition from hand to automa
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文摘:用自动保护双位阀替代节水太阳能热水器的通水输气两位阀，使节水太阳能热水器从手动保护过渡到自动保护，改进了节水太阳能热水器系统. |
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Abstract: The wavefunctions and energy eigenvalues for the ring-shaped oscillator are obtained using the ideas of supersymmetric quantum mechanics and shape invaricace.
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文摘:采用量子力学中的超对称性和形不变性，讨论环形振子的波函数和能量本征值. |
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Abstract: The ways of improving economic benefits of mines were discussed in terms of such various facts as adapting to market environment and changing management idea; Exploiting the advantages of mine itself and developing new source of income; Relying
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文摘:从适应市场环境,转变经营观念;发挥自身优势,开拓新的收入来源;依靠科技进步和科学管理,降低经营成本;树立市场观念,以销定产等多个方面讨论了改善矿山经济效益的途径。 |
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Abstract: The wheat growing area in Central Shaanxi was divided into three climatic zones based on the data of climatic factors and the disease severity for 20 years by using progressive discriminatory analysis.
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文摘:利用20余年的气候资料和病情数据，以逐步判别分析法将关中麦区各县(市)划分为三大气候区。 |
