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underlain

美 [ˌʌndərˈlaɪ]英 [ˌʌndə(r)ˈlaɪ]

过去式：underlay 过去分词：underlain 现在分词：underlying 第三人称单数：underlies

underlain

1.位处在...下面;成为...的基础

2.【经】拥有优先于...的权利,作为优先于...的担保[抵押品]

3.【语】成为(派生语的)语根

Hazard potential evaluation of regions underlain mined caverns is one of difficult technical problems in highway engineering.

Oil pools are valuable underground accumulations of oil, and oil fields are regions underlain by one or more oil pools .