| 释义 |
permeator|ˈpɜːmiːeɪtə(r)|
[a. L. permeator, f. permeāre (see permeate v.).]
1. One who or that which permeates; in quot. 1944, ? an infiltrator.
1944G. B. Shaw Everybody's Pol. What's What? xxxi. 271, I, a Fabian permeator, knew the questions and had doctrinaire answers ready for some of them. 1969Ann. Rev. Plant Physiol. XX. 602 Wartiovaara..compared the permeability constants of homologue series of permeators (e.g., alcohols..) and concluded that two parallel and alternative pathways for permeation of molecules through the protoplasm did not exist. Ibid., The breaking of hydrogen bonds between permeator molecule and water during the passage of the permeator through the membrane is considered to be the important feature.
2. A vessel divided into two by a semi-permeable membrane, used in the large-scale removal of solutes from a liquid by reverse osmosis.
1975M. J. Hammer Water & Waste-Water Technol. vii. 266 In addition to the permeators, a basic reverse osmosis system consists of pretreatment pumps.., tanks and appurtenances for cleaning and flushing, and a disposal system for waste brine. Ibid. (caption) A module of 24 reverse-osmosis permeator units used to desalt a municipal ground-water supply. 1977Design Engin. July 6/3 A new high-capacity permeator..can convert thousands of gallons of seawater into potable water every day. |