单词:wear resistance carbon-graphite material
单词:wear resistance carbon-graphite material 相关文章
When the tired girl had finished her work, she often went to the fireplace and sat down there among the cinders. 疲劳的小女孩每天做完家务活儿之后就会来到壁炉旁,坐在煤渣中间。 Because of this habit she was called Cinder
Do you have that in other colours? Sales clerk: May I help you, sir? Paul Ryefield: Yes, please. Im looking for a cotton polo shirt. Sales clerk: Any particular colour? Paul Ryefield: Not really. Sales clerk: How about this one? Paul Ryefield: I like
At the end of your presentation, you may wish to open the floor to questions to ask if anyone has any questions about your presentation. 你的演讲结束后你可能会留出自由问答时间,问下听众是否对你的演讲有问题. Imagine it is the end of your presentation
59 美国科学家正试图培育抗叶锈病小麦 DATE=6-19-01 TITLE=AGRICULTURE REPORT - Developing Wheat Resistant to Leaf Rust BYLINE=George Grow (Start at 59
There is a new substance that is harder than diamond. It's called Q-carbon, and it was created by researchers at North Carolina State University. 北卡罗莱纳州立大学的研究人员研发出一种名为Q-碳的新物质,其硬度比钻石还高