Protective gas system: pipe line from the protective gas generation station to reducing annealing furnace.

保护气系统：从保护气体发生站至还原退火炉的管道。

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Protective gas system: pipe line from the protective gas generation station to reducing annealing furnace.

保护气体发生站至还原退火炉的管道。

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The improvement seal was composed of combination of stuffing seal and labyrinth seal and protective gas was used.

对填料密封设计进行改进，采用填料与迷宫组合密封结构，加气体保护密封方案。

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Apart from a surgical mask, nobody wears any protective garment or gas masks.

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To prevent burns, bag-in-belt systems use a cold gas to inflate its protective bladder.

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Proponents of rigid airships also claim that their babies are more resilient, thanks to the protective outer skin which shields the gas compartments.

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