中国大学MOOC:图示平面桁架中有4根零杆。http://edu-image.nosdn.127.net/F4C2624E1AF1BB31B23FE02895991CFE.png?imageView&thumbnail=890x0&quality=100
举一反三
- 中国大学MOOC: 图示结构杆1的轴力为0。http://edu-image.nosdn.127.net/9BB321A7C041A8F5A390E3629579625D.JPG?imageView&thumbnail=890x0&quality=100
- 中国大学MOOC: 图示结构的AB杆A端的弯矩为零。http://edu-image.nosdn.127.net/E8AE634401A9E4E88F52EB6FA582479C.JPG?imageView&thumbnail=890x0&quality=100
- 中国大学MOOC: 实腹式轴压杆绕x，y轴的长细比分别为http://edu-image.nosdn.127.net/CEDDCE7A3BB52B52DC56A37DE9DF8675.png?imageView&thumbnail=890x0&quality=100，http://edu-image.nosdn.127.net/2715192C2D5C066B84F9EEC130D1DD78.png?imageView&thumbnail=890x0&quality=100，对应的稳定系数分别为http://edu-image.nosdn.127.net/051E7EF77A20CC8EE7AE73090D7D0B9F.png?imageView&thumbnail=890x0&quality=100，http://edu-image.nosdn.127.net/CDC96ACA4577E26B3DE9DBF3AFBCEC46.png?imageView&thumbnail=890x0&quality=100，若http://edu-image.nosdn.127.net/991E5D4B35F3193105567CAF1B1CB1EC.png?imageView&thumbnail=890x0&quality=100，则( ) 。
- 中国大学MOOC: 图示结构a杆的轴力为：http://edu-image.nosdn.127.net/7D889D864CCDF6BF2F29A6D41AF056CF.JPG?imageView&thumbnail=890x0&quality=100
- 中国大学MOOC: 图示结构A杆的内力为 —P。http://edu-image.nosdn.127.net/967F252C0020A38A895018EF7FA4B294.JPG?imageView&thumbnail=890x0&quality=100