国际法律也许可以防范对古迹的抢掠，但无法防止酸雨和其他腐蚀性元素对它们的损害。
International law may guard ancient monuments from looters, but little can protect them against acid rain and other corrosive elements.
铬又能进步钢的抗氧化性和耐腐蚀性，因此是不锈钢，耐热钢的重要合金元素。
Chromium can improve the oxidation resistance and corrosion resistance of steel, so it is an important alloying element in stainless steel and heat-resistant steel.
对原油及其馏分油中元素硫、硫化氢、硫醇硫、二硫化物、腐蚀性硫、总活性硫以及单体活性硫化合物的分析方法进行了综述。
The testing methods for element sulfur, hydrogen sulfide, mercaptan sulfur, bisulfide, corrosive sulfide, total active sulfur and single active sulfide were reviewed.
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