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The physico-chemical behavior of rare earth elements in low sulphur 16Mn steel and their ability to enhance the corrosion resistance of the steel in sea water studied in this paper. The results indicate that Ce and La in 16Mn steel all have the abilities such as deoxidation, desulphidation, refining grains and cleaning grain boundaries and matrix etc. The anodic and cathodic polarization curves show that the rare earth elements added in 16Mn steel enhance the corrosion resistance of the steel in sea water
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Section A Five Famous Symbols of American Culture Section B Engelbreit's the Name,Cute is My Game Section C Life in Low-Grade Terror
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复旦大学:《艺术治疗》课程教学资源(扩展文献阅读)画人智力测试文献:DRAW-A-PERSON TEST AS A MEASURE OF INTELLIGENCE IN PRESCHOOL CHILDREN FROM VERY LOW INCOME FAMILIES
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《复合材料 Composites》课程教学资源(学习资料)第二章 增强体_fiber155-4 Thermal stability of the low-oxygen-content silicon carbide fiber, Hi-Nicalon
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中华人民共和国机械行业标准:JB/T 5796—2020代替JB/T 5796-2007 船用低压空气断路器 Low-voltage air circuit-breaker for ships(报批稿)
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Additional key-sizes and block-sizes Ability to function efficiently and securely in a wide variety of platforms and applications low-end smartcards, wireless: small memory requirements IPSec, ATM – small key setup time in hardware B-ISDN, satellite communication – large encryption speed Flexibility
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What Do You Know About Your Target? The sensitivity needs of your system are primarily determined by the abundance of your target, which can be approximated according to its origin. Plasmids, cosmids, phagemids as colony lifts or dot blots, and PCR products are usually intermediate to high-abundance targets. Genomic DNA is considered an intermediate to low-abundance target. Most prokaryotic genes are present as single copies, while genes from higher eukaryotes
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Compounds were classified as being either aliphatic or aromatic in the latter part of the nineteenth century. To be classified as aliphatic meant then that the chemical behavior of a compound was “fatlike”. To be classified as aromatic meant then that the compound had a low hydrogen/carbon ratio and that it was “fragrant
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vantages. In fact the bus system does not provide frequent stops and the low Many people appreciate the conve- he bus stops is sometimes not so conve niences of private cars. A private car gives nient. And a private car also has many more comfort and mobility and enables a problems, such as too much harmful car person to go when and where he wants
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Air at high pressure, i.e. at 25 bar or more, is required for starting main and auxiliary engines in motorships. Air at low pressure, say at 6 bar or less is required for much remote or temperature or pressure controlled equipment, for which purpose it must be clean and oil-free
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