| 释义 |
ex·pand·er
\ ̷ ̷ˈ ̷ ̷də(r)\ noun
(-s)
1. : one that expands: as
a. : an operator of a machine that expands metal tubes
b. : a tool designed to expand a boiler tube at its end so as to fit it snugly into the flue sheet
2. : any of several colloidal substances of high molecular weight (as special preparations of gelatin or dextran) used as a blood or plasma substitute in transfusion for increasing the volume of the circulating blood especially in the treatment of shock — called also extender |