basal bed

基本解釋

There has strong water permeability at the basal bed of stilling basin for flood gate of Xixiayuan hydropower project.
西霞院泄洪閘消力池底部巖層具有較強(qiáng)的透水性，因此需在消力池底板下鋪設(shè)排水管以降低揚(yáng)壓力。
Vertically, rocks near the unconformity appear layers which are in turn semi-weathering rock, weathering clay bed and basal conglomerate.
不整合附近的巖層在縱向上呈層分布：從下至上依次為半風(fēng)化巖石、風(fēng)化粘土層和底礫巖。
Objective To explore the problems which have occurred in the basal living nursing for severe in-bed patients, and then map out the countermeasures.
目的了解對(duì)臥床重癥患者實(shí)施基礎(chǔ)、生活護(hù)理存在的問題及改進(jìn)措施。