词汇	维护保养
释义	维护保养 maintainingtending
随便看	positive linear periodic convolution operators positive linear relationship positive list positive list system Positive List System of Japan positive literal positivelization positive locking positive-locking differential Positive Locking System Positive logarithm positive logic positive logic disturbance positive logicrule positive logic system positive logic-transition positive logistics Positive lookahead assertion positive lowering positive lubrication positively positively abstaining from voting positively actuated valve positively and negatively worded items positive Lyapunov stability