Single pendulum experimental equipment instrument set single pendulum ball Group plastic small ball steel ball measuring acceleration of gravity high school physical mechanics experimental equipment single pendulum vibration law student teaching
Single pendulum experimenter set (5-piece set) single pendulum experimenter single pendulum ball Group ring magnet pendulum experimenter (including 1 ball) single pendulum ball group (5 balls) student stopwatch to send battery
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Taizhou Tong Zengyuan Science and Education Instrument Co.
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