六级The resulting steel appears to achieve a combination of strength and toughness that is comparable to that of modern steels that are very rich in alloy content and, therefore, very expensive.
由此产生的钢似乎达到了强度和韧性的组合,与合金含量非常丰富的现代钢相当,因此非常昂贵。
2019年6月六级真题(第三套)阅读 Section A
考研In order to be purified, or combined into alloys, metals must be melted.
金属必须熔化才能被提纯或结合成合金。
1984年全国硕士研究生入学统一考试英语试题
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