... material at first hand 第一手材料 Since The Material First 自料第一 First aid material 急救物资 ...
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Since the material was first created in 2004, its unique electronic and mechanical properties have amazed researchers who say that it could be used in a host of device applications.
自2004年这种材料发现以来，它独特的电学和机械性能令研究人员震惊，他们认为石墨烯可用于多种器件的制造。
As I noted earlier, since the material is introduced linearly, they often get the information after they first need it.
正如我前面所提到的，由于这些资料具有介绍时间上的先后顺序，所以同学们经常会在他们第一次需要他们之后才能得到这些信息。
It is the country's first steel-industry merger since 2002, and comes as rising raw-material prices and steely competition from other East Asian producers have exposed alarming over-capacity.
这是日本钢材业自2002年以来的首次合并，时逢原材料价格不断上涨，东亚钢材生产厂商对日本钢材业的冲击日益加强，已经暴露出钢材业产能过剩令人担忧的状况。
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