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石油钻井硫化氢防护
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石油钻井硫化氢防护
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石油钻井硫化氢防护
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hydrogen sulfide protection in oil drilling
石油钻井硫化氢防护
含硫油气井钻遇硫化氢危险程度极高,须遵守钻井过程硫化氢防护的相关标准和规程,尽可能保证施工现场作业人员、周围居民以及其他在场人员安全的措施。
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political ritual
political role
political rule
political scheme directed the countryside of the Kuomintang government
political science
political science of resources
Political Science Syllabus
political slogan
political socialization
political sociology
political speech
political stability
political state
political stratification
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political structure of society
political subject
political superstructure
political system in ancient Greek polis
political system of ancient Rome
political system of Europe in Middle Ages
political theory
political thought in Ming dynasty of China
political thought in Qin and Han dynasties of China
political thought in Qing Dynasty of China
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