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sprengel pump
s p r e n g e l p u m p hex:#115;#112;#114;#101;#110;#103;#101;#108;#32;#112;#117;#109;#112;
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- Sprengel pump - - A form of air pump in which exhaustion is produced by a stream of mercury running down a narrow tube, in the manner of an aspirator; -- named from the inventor.