deteriorating structure

基本解釋

A minimum cost preventive maintenance scheduling model for deteriorating structure is proposed.
提出了一種計(jì)算結(jié)構(gòu)最優(yōu)預(yù)防性維修周期的模型。
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The later deformation of high CFRD is the main factor of deteriorating the impervious structure of dam.
高面板堆石壩后期變形是惡化大壩防滲結(jié)構(gòu)的重要因素。
Soil structure deteriorating and low soil fertility is the basic problem, which has been limiting the agricultural development.
土壤結(jié)構(gòu)惡化、肥力低下是限制農(nóng)業(yè)生產(chǎn)力發(fā)展的基本問題。