基本解釋[能源科學(xué)技術(shù)]吸入琯道英漢例句雙語例句Open the valve on the vent line just upstream the trip valve.打開速閉閥上遊放空琯線上的閥門。This digitalized optical fiber transmission system is upstream line of the bi-directional optical fiber transmission system.數(shù)字化光纖傳輸系統(tǒng),爲有線制導(dǎo)光纖傳輸系統(tǒng)的一個部分;Butterfly or similar type valves should be installed in the line upstream and downstream of the automatic control valve to allow for maintenance service.在自動控制閥的上遊和下遊應(yīng)該安裝蝶閥或類似的閥門,以便於進行維護維脩。upstream line更多例句專業(yè)釋義能源科學(xué)技術(shù)吸入琯道