She can do 3000 keystrokes an hour.她在一小时内能按键3000次.Use Recorder to record keystrokes or mouse actions to play back later.用记录器记录击键或鼠标行为,以备后来播放.The number of keystrokes was used as a measure of work.敲击键盘的次数被用作工作量的度量指标....
频率多边形比直方图更简单.The frequency polygon is simpler than its histogram counterpart.这个多边形的周长是多少?What is the perimeter of this polygon?只能为任意多边形对象访问此成员.This member can only be accessed for a freeform object....