伪共晶
参考答案:
非平衡凝固条件下,某些亚共晶或过共晶成分的合金也能得到全部的共晶组织,这种由非共晶成分的合金得到的共晶组织称为伪共晶。
If you spend 100 yuan in our store this Sunday, you will get a present ________.
A.for nothing
B.for free
C.in nothing
D.in free
书面表达。
随着08奥运会的日益临近,奥运门票的销售也正在如火如荼地进行。此时此刻,如何成为一名合格的观众逐渐成为人们的热门话题。请你就此写一篇短文谈谈你的看法。
注意:1. 词数:120-150,上下文要连贯;
2. 首段已给出,但不计入总数。
With 2008 Beijing Olympic Games drawing near, the admission tickets are in a great demand all over the world. And we Chinese are beginning to think about how to become qualified audience.
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