短語(yǔ)詞組短語(yǔ)mass migration velocity 質(zhì)量遷移速度mass -velocity ratio 質(zhì)量速度比mass spectra velocity 質(zhì)量速度mass leakage velocity 質(zhì)量泄漏速度mass transfer velocity 傳質(zhì)速度mass gravity velocity 重心速度effective mass transfer velocity 有效傳質(zhì)速率 返回 mass velocity