中文意思是现在的、流通的，例如：
1.Constant Corrent Cut-wave Divided Driving System of Stepping Motor Controlled by Single-chip Microcomputer.单片机控制的步进电机恒流斩波细分驱动系统
2.It is derived from a series of corrent life tables by means of rearranging the conditional probabilities surviving based on calendar years.它是由系列当时寿命表转换而来的，转换机制是将条件生存概率按日历年份重排。
