有更多的细菌对你的案头比对表面你的厕所。
There are more germs on your desk than on the surface of your toilet.
理论计算和实际测试结果的比对表明，本文提出的动态力学模型与实际情况较接近，计算公式和计算方法正确，测试结果可信。
Compared calculation with practice test, this paper puts forward the dynamic mechanics modal which near the practice condition, right calculate formula and method and creditable test result.
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