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级材料 包含2个检索结果
新型材料:比纸薄比钢硬。PAPER is easy to tear (撕破). However, Australian scientists made a super material (超级材料). It is even thinner than paper, but it is stronger than steel (钢). The material is light ……
2011年05月01日
它比纸薄比钢硬Australian scientists (澳大利亚的科学家) made a super material (超级材料). It is light. It is thinner (更薄) than paper, but it is stronger than steel (钢). People can use it to make cars and planes. ……
2011年05月23日
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