... retained firefighter 兼职消防战斗员 retained gas 保留气 retained station 兼职消防战斗员消防站 ...
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... retained foreign exchange 留存外汇 retained gas 滞留气 retained income 留存收益 ...
基于30个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress
The heterogeneity and micro-fissures in source rocks are unfavorable to primary migration of oil and gas, which retained some oil gas within the source rocks forever as micro-reservoirs.
源岩层的非均质性和微裂缝对初次运移十分不利，它们把油气滞留在源岩层内使其成为微油藏。
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