这里的lined out怎么翻译? The level or weight controller should only be used as the primary means of control if the reactor is in a steedy , lined out condition .This way of operation is advisable (明智的) to keep the vent recovery system from being upset (颠覆、扰乱、混乱) . 这里的lined out应该怎么翻译啊? 查看更多7个回答 . 3人已关注
switched在句中的意思? The ethylene double block and bleed valves are first switched in order to open the ethylene supply line while the seven ethylene feed flow control valves are closed. [ ]查看更多7个回答 . 5人已关注