noun
undrained; non-drainage
Technical term used in engineering, construction, or soil mechanics to describe conditions where water is not drained away. Often appears in compounds like 非排水条件 (undrained condition) or 非排水せん断 (undrained shear).
非排水条件での試験結果を報告します。
We report the test results under undrained conditions.
この地盤は非排水状態にある。
This ground is in an undrained state.