This standard is not considering metallurgy factors, such as grain size and hardness.
本标准未考虑冶金方面的因素, 如:晶粒尺寸、硬度.
互联网
The screw was invented in ancient times to carry objects such as grain and water gravity.
阿基米德螺杆是古代的发明,可将谷物及水等东西向上运输.
互联网
Such as grain sheet rubber, it play the role of derrick and inflaming retarding.
如有纹理的橡胶片, 这种材料可起到防滑、阻燃等功能.
互联网