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 fusional reserve convergence正融合性储备, 正融合性储备集合positiveand negative feedback control正负反馈控制positive-phase-sequence component正相序部分Positive-branch unstable resonators正支共焦非稳腔Positive and good working attitude.积极良好的工作态度。positive hematopoietic progenitor cell阳性造血祖细胞positive-negative three level action正负三位作用positive/negative bi-layer resist正／负双层光刻胶positive-negative pressure breathing正负压呼吸positive-displacement air compressor正排量空气压缩机