基本解释羅茨增壓泵英汉例句雙語例句This paper introduced the advantage and characteristic of L-series roots blower, which could substitute the liquid ring pump in the process of hydrogen transportation.本文介紹了L系列羅茨鼓風機在氫氣輸送過程中替代液環泵的優勢與特點。Roots blower pump更多例句