进尺

zuān tàn nián jìn chǐ

钻探年进尺

annual drilling footage

suì dào jué jìn rì jìn chǐ wéi shí mǐ

隧道掘进日进尺为十米。

The daily tunnelling footage is 10 metres.

zuān tàn rì jìn chǐ

钻探日进尺

drilling footage in a day

jué jìn jìn chǐ

掘进进尺

drifting footage

kāi tuò jìn chǐ

开拓进尺

tunneling footage

záo yán jìn chǐ

凿岩进尺

drilling footage