1)three phase signal,三时相号志2)the Third Period,第三时期3)Three-Scale Separation,三时标分离4)three time evaluation method,三时估算法5)four generations and three periods,四代三时期6)three time slots demodulation,三时隙解调7)the Third Period Theory,“第三时期”理论8)"the third period" theory,"第三时期"理论9)midafternoon,下午三时左右10)Restrictive Probability of Three Times Estimation,限定概率三时估计法