带处理的同时性
tape processing simultaneity
钐和钆的同时测定
Simultaneous determination of Sm and Gd
同时的相对性
relativity of simultaneity
冰的非同时破坏
Non-simultaneous failure of ice
不同时间的差异
differentiation over time
电脑时钟的同步与校准
Computer clock synchronization with calibration
合同规定的时间限
contractual limit of time