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5 天
指尖陀螺--行星齿轮
目前齿轮配合完美,可紧密啮合。整个指尖陀螺也可以转动,但由于经费问题,买不起好的轴承,所以转动不了太长时间;还有就是焊接铜柱很难保证与PCB板面垂直,导致各层安装有一定摩擦和晃动,暂时没有啥好的改正办法。 具体的安装轴承步骤,参照之前的 ...
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今日热点
Emanuel joins CNN
Cause of death revealed
Alleged shooting plot arrest
Sentenced for killing wife
US retail sales plunged
Chernobyl reactor shell hit
Plane returns to Washington
EU warns on Trump tariffs
Creates MAHA commission
Musk's role challenged
US approves extradition
Detected in veterinarians
Infant mortality rates study
Quakes shake Bay Area
Signs FL immigration laws
Pope Francis hospitalized
WH blocks AP reporter
Florida Sen. Thompson dies
Alabama House passes bill
Flanagan to run for Senate
Trans care order blocked
Foreign aid freeze lift order
Criticizes European allies
Credit card debt hits $1.21T
DOGE team’s access audit
Eagles Super Bowl parade
Reach short-term extension
Former Arkansas gov. dies
Lyles, Hill agree to race
US citizen held in Russia
Hamas to free 3 hostages
On recovery from torn ACL
Another prosecutor quits
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