positive set直接用上条柄拨针,固定位置,正集
positiveadj.积极的;肯定的;明确的;正面的;正数的;阳性的n.正面;正数;正片;[语]原级
Positive Attitude Toward Youth Sports对体育的态度要正确
positive relative reserve convergence正相对储备集合, 正相对集合
positive displacement type flow meter容积式流量计
positive pressure breathing apparatus正压式呼吸器具
positive-phase-sequence reactance正相电抗
positive serial correlation in demand需求相关性
positive crankcase ventilation system强制曲轴箱通风系
positive-phase-sequence impedance正相序阻抗