箱梁横向内力的计算目前还缺乏精确有效的简化方法。
Lateral internal force calculation of box girder still lacks accurate effective and simple method.
本文讨论了质量离散分布和连续分布的刚性细杆在转动中切向内力的分布规律。
The tangential internal forces in a rotating rigid thin rod with mass distributed discretely and continuously are discussed.
发现纳米管的压缩强度，如临界轴向内力在低温下受温度影响明显，并且和应变率的大小有关。
It was revealed that the compressive strength of nanotubes, such as the critical axial load, is related to applied strain rate and also affected by temperature especially by lower temperature.
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