According to above points, we concluded that although some parts of the weir plate have certain gas holes on the surface, it won't ill-effect the use functions.

Then, the defects generated in manufacture were forecasted and analyzed Furthermore, through reducing the pouring velocity, the gas holes generated by the severe movement of the alloy liquid coul...

A Japanese spacecraft has spotted two huge holes in the sun — gateways for solar material and gas to spill out into space.