材料科學(xué)與工程專業(yè)英語翻譯-資料下載頁
2025-04-04 01:16本頁面
【正文】 e drinking water and nearly 40% has no access to sanitation. 材料與社會(huì)是相互聯(lián)系的，并且我們應(yīng)當(dāng)認(rèn)為材料科學(xué)工程的發(fā)展與影響人類生存條件的全球社會(huì)問題存在密切的關(guān)系，這是唯一理性的看法。 Materials and society are interlinked, and it is only rational that we should see a close relation between the MSE research agenda and societal issues that affect the human condition on the globe.Unit7：離域電子 delocalized electrons 電子結(jié)構(gòu) e lectrical structure堿土金屬a lkaliearth metals 核電荷 nuclear charge 化學(xué)電池 electrochemical cell 核電荷 nuclear charge 導(dǎo)電性 e lectrical conductivity價(jià)帶 valence bands離子晶格 the ion latti 金屬有時(shí)被描述為由游離電子團(tuán)包圍的正離子晶格。Metals are sometimes described as a lattice of positive ions surrounded by a cloud of delocalized electrons.通常地，金屬具有良好的導(dǎo)電性和導(dǎo)熱性，具有金屬光澤，密度較大，并且具有在壓力下變形而不會(huì)斷裂的能力。Metals in general have superior electric and thermal conductivity, high luster and density and the ability to be deformed under stress without cleaving. 合金是指兩種或兩種以上的元素形成的固溶體混合物，其中主要組分為金屬。An alloy is a mixture of two or more elements in solid solution in which the major ponent is a metal.不同比率的金屬結(jié)合成為合金可以改變純金屬的性質(zhì)，從而產(chǎn)生所需要的性能。Combining different ratios of metals as alloys modifies the properties of pure metals to produe desirable characteristics.
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