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机械加工表面质量作用？

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名词解释：表面粗糙度。

名词解释：表面层冷作硬化。

The event will be telecast _____________ to nearly 150 cities.

A. simultaneous
B. simultaneously
C. unsimultaneously
D. insimultaneously

Teething can be painful and make your baby __________ .

A. irritable
B. irritably
C. inimitable
D. inimitably