The first step is to determine the unit-time reference dose rate .
第一步要确定单位时间参考剂量率。
2
Especially for first-time home buyers, young white-collar population, the unit price for three rooms, fully meet needs, and make home ownership in one step.
特别是对于首次置业的年轻白领一族来说，三房单位价格适宜，充分满足生活的需要，使置业一步到位。
3
The improved algorithms can reduce significantly the truncated error of the truncating unit pulse (or step) response time-sequence of the controlled process as the internal model.