如果其它方法不能立竿见影,那么可以考虑每天做10-15分钟的仰卧起坐。
You won"t see a change immediately and you may need to build up to doing 10-15 sit-ups a day."
[57] 杨加明,钟小丹,赵艳影。复合材料夹杂双层黏弹性材料的应变能和阻尼性能分析[J]。工程力学, 2010, (3): 133-138。
YANG J M, ZHONG X D, ZHAO Y Y. Strain energy and damping analysis of composite laminates with two interleaved viscoelastic layers[J]. Engineering Mechanics, 2010, (3): 133-138.
[57] 杨加明,钟小丹,赵艳影。复合材料夹杂双层黏弹性材料的应变能和阻尼性能分析[J]。工程力学, 2010, (3): 133-138。
YANG J M, ZHONG X D, ZHAO Y Y. Strain energy and damping analysis of composite laminates with two interleaved viscoelastic layers[J]. Engineering Mechanics, 2010, (3): 133-138.
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