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https://feedx.site，更多细节参见新收录的资料
。新收录的资料是该领域的重要参考
Newcastle upon Tyne
Let's go back to that tug-of-war. The driver on the right now has an idea: Instead of gunning his engine, he throttles down to maintain a static friction interaction with the rails. Slow and steady. The guy on the left floors it—and what happens? His wheels spin and he gets a kinetic frictional force. Well, static friction beats kinetic friction, so the right train wins!。新收录的资料对此有专业解读
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