它们是由硅砂和金属构成的,和恐龙蛋没有任何关系……除此之外,我们还能看到它们上面的腐蚀的部分。
They consist of silicon, sand and metal so there's no any connection to dinosaurs... Besides, we may see corrosion on some of them.
不要使用金刚砂局取消您的自然指甲表面的。
Do not use emery board to scrap your natural nail surface at all.
粘结面的粗糙度以灌砂平均深度定量描述。
The interfacial roughness is described quantitatively with average depth of sand pour method.
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