sz811021
幼苗
共回答了12个问题采纳率:83.3% 举报
1 material science is an ology between process orgaize capability and function.
2 supernal bond strength also made ceramics 热化学惰性 ,which have a prospective of use in motor ,such as auto, areospacecraft and the motor of engine set
3 first ,steel with a fat lot carbon is softer than that with high content in the circumstance that carbon content is less than 1.5%
1年前
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