gear-type pump 齿轮泵

gear type booster pump 齿轮式增压泵

gear-type recycling pump 齿轮式循环泵

gear type pilot pump 齿轮式先导泵

gear type transfer pump 齿轮式输油泵

gear type hydraulic pump 齿轮式液压泵

external gear-type oil pump 外啮合齿轮式油泵

external gear type oil pump 外啮合齿轮油泵

gear type oil pump 齿轮油泵