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根据张衡发明的地动仪工作原理，研制出一款升级版地动仪，不用电不费油，就是有点费人。 [url=https://sm901.com/d/file/p/20250512/d2bd525861909b747b07fa13f802c664.jpg] [url=https://sm901.com/d/file/p/20250512/3a6afd5c9bf939060c5dd2714d825177.jpg] [url=https://sm901.com/d/file/p/20250512/338174940c34e7084fda21d7ff22b026.jpg] [url=https://sm901.com/d/file/p/20250512/89a11138195b8706e83d6581c533c62b.jpg] | 
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