...关键词： 圆柱螺旋弹簧;弹簧的质量;约束坐标轮换法;优化设计 [gap=446]Keywords: cylindrical helical spring;weight of spring;constrained coordinate supersede technique;optimum design ..
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Simple equations for calculating the winding ratio ensuring the minimum weight of spring are provided.
同时给出了弹簧重量最小时旋绕比值计算的简单的显函数公式。
Spring tendons enhance the foot’s efficiency: some of the energy spent to drop one’s weight down when taking a step is actually stored and then returned to the leg as it rebounds.
人们走路每迈出一步，重量落下时所输出的一部分能量，事实上被脚弓存储起来，然后被脚弓弹起，这部分能量就又返回到腿部。
So a few weeks after my birthday, in the spring of 2006, I walked into the office of a weight-loss doctor.
于是在2006年春天，在我过完生日的几个礼拜后，我走进了减肥医生的办公室。
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