This means that if the system could not perform the push or pop operation within the timelimit you specify, the operation should not execute at all.
这意味着，如果系统无法在指定的时间限制内执行添加和取出操作，就应该根本不执行操作。
2
Short timelimit, less expense and conveniet operation are its feature.
它的特点是工期短，费用少，施工操作简便。
3
Power, test time, record period, voltage lower limit, voltage upper limit, lead internal resistance, operation model, data and time parameter can be set with keyboard.