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。

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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。

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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。

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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