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Home › Global Industry Standards › GB/T 4754—2017 › B · 采矿业 › 07 · 石油和天然气开采业 › 072 · 天然气开采
GB/T 4754—2017 CN Group
072

天然气开采

2
Class
Direct Subordinate Classifications · 2 Items
0721
陆地天然气开采
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0722
海洋天然气及可燃冰开采
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Peer Categories
071 石油开采 072 天然气开采
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