片语
a closed water area封闭性水域
closed void area ratio封闭空体面积比
closed fishing area禁渔区
closed levee area封闭圩区
semi-closed water area半封闭式水域
restricted area[军] 禁区;限制区;[水运] 限航区;专用区
closed drainage area闭流区
Closed Range Area Calculation闭合范围面积计算
closed water area半封闭式水域
restricted zone禁区;限制区