| 释义 |
ˈtrenchless, a.
[f. trench n. + -less.]
Applied to pipe-laying and draining machinery, etc., that dispenses with the cutting of a trench.
1969[see pipe-layer]. 1971Power Farming Mar. 60/1 This is a dual-purpose trenchless drainer. 1979Daily Tel. 31 Dec. 15/5 There is the so-called trenchless machine which, in one operation, can lay the pipe without any soil being removed. |