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This seismograph was invented by Zhang Heng in A.D.132,as the world's first instrument to sense earthquakes.It used the principle of inertia, using pendulum and lever mechanics. |
中文意思: 公元132年张衡发明制造侯风地动仪是世界上第一台感知地震的仪器。地动仪利用惯性原理、以摆和杠杆机械为主的结构模式,测定地震和方向。 |
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