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。

youdao

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。

youdao

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。

youdao

Huawei revealed the depth of its frustration in mid-February when it published a surprisingly candid open letter on its website inviting the U.S. government to formally investigate the various claims that have been levied against it.

FORBES: Huawei Holding 10-Year U.S. Anniversary Event To Refine Reputation

So, it seems, the scientific uncertainty generated by not having good data from the mid-20th century is going to be repeated in the early 21st century (satellites may help on optical depth, but it would really help to know what is being emitted).

FORBES: Climategate II: An Open Letter to the Director of the National Center for Atmospheric Research