Methods of measurement of the performance characteristics of positive-displacement vacuum pumps : part - 1 : measurement of the volume rate of flow (pumpung speed)

Methods of measurement of the performance characteristics of positive-displacement vacuum pumps : part - 1 : measurement of the volume rate of flow (pumpung speed) - - New Delhi ISI 1973 - 13 p. - ISI S 6849 : part - 1 : 1973 .







BISI S 6849 : part - 1 : 1973

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