| 释义 |
Noun: retarder ri'taa(r)du(r)- One who, or that which, retards
- Any of various devices, as a helix of flat metal strip, introduced into a boiler tube to increase the heating effect of the fire
- A substance, as potassium bromide, added to a developer to retard its action
Derived forms: retarders Encyclopedia: Retarder |