However, natural gas is relatively evenly distributed in shallow, mid-depth, deep and ultra-deep formations.
天然气资源在浅层、中深层、深层和超深层分布却相对比较均匀。
A suggestion on attaching importance to the oil and gas exploration in mid-depth strata in the northern high of Fulongquan structure is proposed according to the results of research.
根据研究成果，提出了在伏龙泉构造北高点要重视中深层油气勘探的建议。
In this paper the construction plan of mid depth parallel cut blast is introduced, meanwhile some important technical questions are pointed out.
介绍了采用中深直眼掏槽爆破的施工方案，并指出几个关键性的技术问题。
By using the CDP gather, common-mid-point stacked time section or apparent depth section can directly be obtained, which can be converted into normal depth section.
利用CDP道集，可以直接获得共中心点叠加时间剖面或视深度剖面，由此可转换为法向深度剖面。
The position of tensile region of the section at mid-supports goes down as the span-depth ratio reduces.
中间支座截面受拉区的位置随着跨高比的减小而下移；
The position of tensile region of the section at mid-supports goes down as the span-depth ratio reduces.
中间支座截面受拉区的位置随着跨高比的减小而下移；
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