常見例句A residency is aperiod of hospital training for medical school graduates. 一段實習期是指允許醫(yī)學研究生在醫(yī)院培訓實習的時間。aperiodical coil 無規(guī)卷曲aperiodical coil(random coil) 無規(guī)卷曲, 非周期性螺旋aperiod mutant 無周期突變體 返回 aperiodical