萎缩无牙的下颚骨脊
severely atrophic mandibular edentulous ridge
当下的临床科学家模式
local clinical scientist model
1+1组的个数的下界
lower bound of the number of 1+1 arrays
Devaney意义下的混沌映射
Devaney’s sense chaotic map
Fourier变换下的子空间不变性
subspace invariant under Fourier transform
VaR约束下的投资组合
portfolio with value at risk
凹凸函数的下闭包
lower closure of concave-convex function
凹向下的
concave downward
concave downward‘ concave down
巴士的下层
the lower deck of the bus
板块下的构造
tectonics beneath the plate
板块下的构造和地幔运动
mantle tectonics beneath the continental lithosphere