透水水泥混凝土
permeable cement concrete
permeable concrete
pervious cement concrete
种皮透水透气性
permeating properties of seed capsule
X射线透射法
X-ray transmission method
X-ray transmission technique
X-ray transmission
X射线透射光栅
X-ray transmission gratings
X-ray transmission grating
X射线透射照相
X-ray transmission photograph
photograph
X-ray transmission