词汇	deep sea submersible
释义	deep sea submersible 🌏深海潜水艇
随便看	effective lateral restraint effective latitude effective launcher line effective laws effective layer effective leader effective leadership effective leakage path effective learner effective learning effective learning and teaching effective learning environment effective learning factors effective learning project effective length effective len gth effect ive length effective length coefficient effective length factor effective length factor of col-umn effective length method effective length of antenna effective length of a pile effective length of bolt effective length of bolt support