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a pair of direct-acting steam pumps so arranged that each pump begins its working stroke just as the other finishes its working stroke, so that the rate of flow of the fluid is nearly continuous.
Based on the Random House Dictionary, © Random House, Inc. 2016.
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At first a Worthington
having a capacity of about 500 gal.
Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910
B. H. M. Hewett
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