rock surrounding a tunnel的用法和樣例：
例句
- The classification of rock masses is in the base of tunnel design and construction.
隧道圍巖地質(zhì)類(lèi)別的判別是進(jìn)行隧道支護和施工的基礎。 - Long time surface water supply by permeation causes surrounding rock being saturated all the time, to soften up the rock.
長(cháng)期的地表水滲透補給導致隧道圍巖一直處于飽水狀態(tài)，逐漸使部分巖石軟化。
