sub-basesBNC²³⁶²¹³⁺¹ 基本例句 底基层原型sub-base的复数 General earthmoving will be done to prepare sub-bases of buildings and roads. 为了准备建筑的底基和道路需进行挖运土方。 nanhucredit In area of deep frost penetration, sub-bases of clean, noncapillary materials often underlie the regular base course. 在深冻地区公路施工中，人们通常在基层之下用干净的、不发生毛细作用的材料铺筑一层底基层。 courses.cqjtu.edu.cn