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App Inventor 2 向心力实验App - 探究向心力F与角速度ω、半径r、质量m的关...
...速度 a
2. 陀螺仪（GyroscopeSensor）— 实时测量角速度 ω
3. 用户输入质量 m（可模拟不同质量物体）
4. 用户输入半径 r（可设置不同旋转半径）
5. 自动计算 F = m · r · ω²
6. 实时绘制 F-ω、F-r、F-m 关系曲线
7. 叠加理论曲线对比...
Understanding spring @Configuration class
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edited Jan 19 '19 at 20:37
answered Jun 3 '14 at 12:12
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Is file append atomic in UNIX?
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edited May 23 '17 at 12:34
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answered Jul 20 '09 at 16:39
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CSS last-child(-1)
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You can use :nth-last-child(); in fact, besides :nth-last-of-type() I don't know what else you...
How can you use optional parameters in C#?
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How do I check if there are duplicates in a flat list?
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answered Oct 9 '09 at 4:38
Denis OtkidachDenis Otkidach
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How to add some non-standard font to a website?
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edited Dec 22 '15 at 12:32
community wiki
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How do I get bash completion to work with aliases?
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answered Feb 21 '13 at 18:25
chris_sutterchris_sutter
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How to get folder path for ClickOnce application
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answered Feb 22 '12 at 21:31
Erik VullingsErik Vullings
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Bootstrap 3: Keep selected tab on page refresh
I am trying to keep selected tab active on refresh with Bootstrap 3 . Tried and checked with some question already been asked here but none of work for me. Don't know where I am wrong. Here is my code
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