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Abstract: The method of using formaldehyde buffer solution a b sorption-hydrochloric pararosaniline spectrophotometry to determine sulfur diox ide in air has higher sensitivity and good selectivity,and prevents from adoptin g mercurial absorbent.But the c
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文摘:以甲醛缓冲溶液吸收-盐酸副玫瑰苯胺分光光度法测定空气中的二氧化硫，方法灵敏度高，选择性好，避免了使用含汞的吸收液，但如果实验条件控制不好，试剂空白值及标准曲线的斜率就会不符合《空气和废气监测分析方法》中规定的值，本文着重从操作技巧方面对二气化硫测定的实验室质量控制进行分析，仅供参考。 |
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Abstract: The method to add Chinese annotation in PCB with C-language was discussed.
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文摘:论述了用C语言在PCB中加中文注释的方法。 |
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Abstract: The method to determine the shape of solidification shell in the process of continuous casting of steel is studied.By establishing the model of stable temperature field,with the observation of first and second boundary value on the exterior of t
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文摘:讨论了钢铁工业连铸过程中结晶器内连铸坯凝壳形状的确定方法.通过建立稳定温度场模型，在现有观测条件下，用边界变分方法给出了确定铸坯凝壳形状的辨识算法.实验数据显示此方法是有效的. |
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Abstract: The methods to determine the chrome content of waste liquor of modified two-bath chrome tanning process were studied by chemical analysis.
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文摘:研究了变型二浴法的鞣制废液中，铬含量测定的化学分析方法。 |
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Abstract: The methods to ensure the quality and reliability of aluminum electrolytic capacitors are provided based on the author's experience in practice.
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摘要：根据实际的工作经验，介绍一些可以保证电解电容器的质量与可靠性的方法以及须注意的有关问题，具有一定的参考价值。 |
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Abstract: The micro-mechanism of short crack and the influence of micro-structures on short crack propagation have been investigated by OM，SEM and TEM for a LY12CZ Aluminium alloy.
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文摘:通过扫描电镜、透射电镜、光学金相等手段对LY12CZ铝合金疲劳短裂纹的微观机制进行了分析研究，结果表明，材料的微观组织对短裂纹扩展行为有很大影响。 |
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Abstract: The microcomputer control system of the industrial boiler is established so as to guarantee the normal work and economic burning o f the boiler.The control algorithm is introduced and the anti-interference meas ures are presented in the paper.
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文摘:以保证锅炉正常运行和经济燃烧为目标，建立工业锅炉微机控制系统，介绍了一种锅炉控制算法，提出了抗干扰的措施。 |
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Abstract: The microstructure of as-cast high Cr injection micro-alloying martensitic cast iron and the substructure of martensite in it have been observed under SEM and TEM.The alloying element distribution related to phase formation,as well as the variou
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文摘:应用扫描电镜和透射电镜研究了喷射微合金化的铸态马氏体高铬铸铁显微组织及马氏体的亚结构，并借助X射线衍射与电子探针分析探讨了合金元素的分布与相形成的关系，以及碳化物的不同形式分枝与畸变。 |
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Abstract: The mini-commerce featured with fine operation has developed in the limited space in Zurich, Davost and Berne, the three famous cities of Switzerland, consequently, the industries of banking, real estate manufacturing, tourism, etc. have been pr
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摘要：瑞士三个最著名的城市——苏黎士、达沃斯、伯尔尼在有限的空间内，发展出以精益经营为特色的袖珍商业格局，从而促进了货币银行业、房地产租赁业、钟表制造业、旅游开发业等产业的共同发展。 |
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Abstract: The mixed salts of diethanolamine and sodium of lauramidoethylene sulfosuccinate is prepared to modify the products with the mixture of the diethanolamine and hydrogen sulfite of sodium as sulphonating agent.The transparency problem of the produ
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文摘:采用亚硫酸氢钠与二乙醇胺的混合物作磺化剂，对琥珀酸月桂酰胺基乙酯磺酸钠进行改性，制得了钠与二乙醇胺的混合盐，改善了产品的透明度.性能分析表明：改性前后其主要表面物理性能基本相当，且改性后该产品具有较强的抗盐能力，适用于含盐量较高的制品. |
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Abstract: The modern plastic surgery,accompanied with western medical science,was transmitted to our country by missionary since the opium war(1840).By looking into the medical journal,literature materials published before 1949,it may be confirmed that th
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文摘:鸦片战争开始后，现代整形外科随西洋医学的东渐由传教士传入我国，经查阅我国解放以前的医学期刊文献资料，可以确认我国整形外科最早出现于1934年，由倪葆春创建，并查得与整形外科有关的论文共只27篇，其所包含的内容基本可以反映该历史时期发展及其水平的概况，由此可认为在解放前这一学科尚处于萌芽阶段。 |
