active NAK主动NAKactiveadj.活跃的；积极的；起作用的；灵活的active contour model活动轮廓模型active relay station有源中继台active carbon powder粉末活性炭active noise control有源噪声控制active mineral spike活性矿物掺料active volt-ampere有效伏安active singing point实际振鸣点active for an object积极追求目标active working space活动工作空间active radar jamming有源干扰