Studying long range plan for underground piping surveillance.

研究地下管道长周期监督计划。

youdao

Small size tunnel driving is a construction technology of underground piping without excavation.

小型隧道掘进是一种无需开挖的地下管道施工技术。

youdao

Then go in secret in the underground piping, touch an enemy's front for patrol, raid from the behind, done in complete secrecy polish off him.

然后在地下管道中潜行，摸到一个巡逻的敌人的前方，从后面突袭，神不知鬼不觉把他干掉。

youdao

There are over 3, 000 miles of underground piping systems that have not been certified as safe for E15 as well.

WSJ: E15 Must Await New Infrastructure �� Letters to the Editor

Who is going to pay to replace the dispensers and underground piping, which will cost some retailers hundreds of thousands of dollars?

WSJ: E15 Must Await New Infrastructure �� Letters to the Editor

The federal Treasury cupboard is bare, and it is very difficult to imagine hundreds of millions being appropriated to replace dispensers and underground piping.

WSJ: E15 Must Await New Infrastructure �� Letters to the Editor