Pay attention to their fair share of oil gas hole size, and the design of the gas points capacity.

注意气分内回油孔尺寸，还有气分的设计容积。

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So often easily design overflow and air vent at inappropriate location, making casting generated gas hole.

所以常常容易因为溢流井与逃气道位置设计不当，使得铸件产生气孔的缺陷。

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The structural parameter mainly includes the gas hole diameter, the water hole diameter and the mixture hole diameter.

结构参数方面主要包括气孔直径、水孔直径及混合孔直径。

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Importantly, this mud also acts as a kind of plug in the hole, preventing any oil and gas from blasting up out of the hole.

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But those lower-energy X-rays can be further distorted by layers of gas between the black hole and the Earth, and previous spin observations have been contentious.

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This allowed natural gas to migrate up the hole and explode at the surface.

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