true-time实时;买时
true-time delay实时延迟线
true solar time[天] 真太阳时;太阳时间;实日头时间;真正太阳时间
true sidereal time[天] 真恒星时
true-time operation实时操作
true-time delay line实时延迟线
true-time-delay光控真时延
operation true-time operation实时运算
N（名词） the time shown by a sundial; solar time. When the sun is at the highest point in its daily path, the true time is exactly noon 真太阳时 → compare mean time