资料来源 : pyDict

体积描记法; 容积描记法

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Plethysmography \Pleth`ys*mog"ra*phy\, n. (Physiol.)
   The study, by means of the plethysmograph, of the variations
   in size of a limb, and hence of its blood supply.