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Underwater welding is a kind of professional technology f...

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In order to salvage the wrecked ship or salvage the damag...

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I. Inspection of underwater part of hull(1) Inspection co...

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Divers'self-rescue and mutual rescue technologies include...

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1. Breathing oxygen in diving. When diving is decompresse...

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1. The more cement, the faster it solidifies and the hard...

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Underwater welding is a kind of professional technology f...

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In order to salvage the wrecked ship or salvage the damag...

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I. Inspection of underwater part of hull(1) Inspection co...

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