a. allowing fluids or gases to pass or diffuse through
常见例句
1
n separation of substances in solution by means of their unequal diffusion through semipermeable membranes v separate by dialysis
2
separation of substances in solution by means of their unequal diffusion through semipermeable membranes
3
a medical instrument for separating substances in solution by unequal diffusion through semipermeable membranes
4
Freely permeable by radiant heat.
5
(biology, chemistry) diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal
