The fatigue failure has been considered as torsion bar spring are subject to periodic forces.
由于扭杆受到的是循环应力，因此设计时考虑了疲劳失效问题；
As the king of herb for periodic dip bathing — ginseng spring can supply vital force, invigorate spleen, benefit lung, generate saliva, stop cough, soothe nerves and benefits the kidney.
定期浸浴百药之王——人参泉汤，有补气救脱、补脾益肺、生津止咳，安神益肾的功效。
As the king of herb for periodic dip bathing — ginseng spring can supply vital force, invigorate spleen, benefit lung, generate saliva, stop cough, soothe nerves and benefits the kidney.
定期浸浴百药之王——人参泉汤，有补气救脱、补脾益肺、生津止咳，安神益肾的功效。
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