持续时间：指定了锁被持有的时间长度。
Duration: Specifies the length of time for which a lock is held.
即使一旦购买成功，被买公司被持有的时间相对过去而言则更短，这样更没有多少时间对其进行重组或者改造。
Once acquired, companies are held for shorter periods than in the past, leaving less time to knock them into shape.
美国密苏里大学分析人员表示，由于电脑系统可高速处理多数股票交易，一只个股平均被持有的时间只有22秒。
The average time a stock is held is 22 seconds, as computerized high-speed trading accounts for most transactions, according to analysts at the University of Missouri.
应用推荐