Research indicated that parity of vane number have no direct relation with flow pulsation of vane pump and the flow pulsation frequency is independent from the odd or even number of pistons.是什么意思_Research indicated that parity of vane number have no direct relation with flow pulsation of vane pump and the flow pulsation frequency is independent from the odd or even number of pistons.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句