positiveismn.实证论；实证主义n.自信；独断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 regulator正调节物, 正调节蛋白positive asymmetry正非对称positive reactance感抗positive limit set正向极限集positive-ion ray正离子射线positive azeotrope正共沸混合物positive testimony积极证言positive cut-off完全截水墙positive operators正算子positive actuation正启动

positive signn.[数]正号