He timed each performance with a stop-watch. 他用秒表测定每组动作所花的时间。
The tree is organized by performance objects, denoted by folder icons, and performance counters, denoted by stop-watch icons. 该树是由文件夹图标所标识的性能对象和秒表图标标识的性能计数器组织成的。
Referee: Please take a note and star the stop-watch. 裁判长:请做记录,并开秒表计时。
For quantitative exploration, the simulations have measurement instruments available, such as a ruler, stop-watch, voltmeter and thermometer. 在定量探测上,模拟有测量工具,例如尺子、秒表、伏特计和温度计。