Harmonic Motion: experimental board, spring weight , loaded board, counterpoise, stopwatch.

简谐运动: 实验板, 弹簧秤, 载重板, 砝码, 码表.

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Hook's Law: experimental board, spring weight , loaded board, counterpoise.

虎克定律: 实验板, 弹簧秤, 载重板, 砝码.

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So the the cup spring weight cradle will be the future developement stream and develops rapidly.

因此,板簧加压技术将会在今后快速发展.

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