有效区 meaning in English
coverage area
service area
valid zone
Examples
- Module size w h t1 t2 t active area mm character size mm
有效区尺寸的规格：宽高mm - 78 . 0 64 . 0 2 . 8 max active area mm
有效区尺寸宽高mm ： - Radar cross - section
雷达有效区 - Deformation control of deep excavation pits is firstly introduced in detail , and new conceptions of effective coefficient , effective area , no - effective area and critical line , including the referential criteria and economic - effective measures of deformation control , have been put forward
摘要文中首先对深基坑工程变形控制进行了详细的论述，提出了基坑有效系数、有效区、失效区、临界线的新概念，同时提出了变形控制参考标准和经济有效的变形控制对策。