运动计时器 StopWatch & Timer Plus V1.11 下载：141次 大小：825KB 时间：2012-06-27 类别：生活实用 语言：中文 系统：Android 1.5+
凭藉其倒数计时器和秒表它是一个完美的配件为任何竞争的运动员。
With its stopwatch and countdown timer it is the perfect accessory for any competitive athlete.
像在此前后的大多数孩子一样。他痴迷于探查计时器的工作方式及观察棘轮，车轮，弹簧和钟摆的运动。
Like most children before and since, he became fascinated by peering into the workings of a timepiece and watching the movement of ratchets and wheels, springs and pendulums.
用废弃的输液器制作了简易的“打点计时器”，可以在课堂上分析、判断直线运动以及研究机械振动。
A simple ticker-timer, which can be used to study the straight line motion and the mechanical vibration, is made using transfusion set.
应用推荐