Adit mining is a mining method mainly used in the mining process of marble and other minerals at present, and it is an underground mining method in the mining industry relative to the "open-pit mining" method, that is, using the adit development method to enter the underground ore body for mining, and underground mining also includes vertical shafts, inclined shafts and other mining methods.

Pinyin dòng c m: i.

Cave? dòng?

Cave; Cave dwelling; Mine pit. ●

Take c m: I? ㄘㄞˇ

Pick: Pick. Pick flowers. Picking. Collecting and processing.

Select, collect, develop and utilize: interview (collect and search). Adopt (accept an opinion). Collect. Logging. Purchasing. Mining. Collect and write.

Look: look. Wonderful.

The same as "color".

[Mining] The appearance of abundance.

Ancient officials.

Adopt cài? ㄘㄞˋ

[land acquisition] the fief of ancient Qing Dafu. Also known as "fief"