无机肥各自的优缺点
inorganic fertilizer their respective advantages and disadvantages
伴随有向图
associated digraph
Associated directed graph
Associated diagram
alssociated digraph
A的伴随矩阵
adjont(adjugate) of matrix A
呼吸器伴随的肺伤害
Ventilator associated lung injury
微分方程的伴随系
adjoint system of differential equations
TOFD技术优缺点
TOFD technical advantages and disadvantages