拨号: dial; dialing; selection持续: last; continue; sustain时: shí]长: older; elder; senior信号持续时间: signal duration平均拨号时长: average dialling time有效信号持续期间: effective signal durationqrs持续时间: qrs duration半持续时间: semiduration波持续时间: wave duration长持续时间: long duration持续时间: continuance; dauer, die; duration of time; duration time; endurance period; extended period; lasting; length of time; persistence time; persistency; persistent period; prolongation; standing; time duration; time length; time of duration持续时间, 为期: duration持续时间，宽度: duration反应持续时: response duration期间，持续时间: duration of exciting色持续时间: color duration; colour duration疼痛持续时: dur. dolor雾持续时间: fog duration帧持续时间: frame durationt秒的持续时间: duration of t seconds暴雨持续时间: duration of storm泵浦持续时间: pumping duration比特持续时间: bit duration标称持续时间: nominal duration
