The U.S. patent office refuses to assess claims for perpetual motion devices unless the inventors can produce working models.
美国专利局拒绝评估认证永动装置，除非设计者们能制造出可用的模型。
After 1870, inventors were no longer obligated to include models with applications. Today, models are required only for perpetual motion machines.
1870年之后，发明家们在申请专利的时候已经不必要再附上模型了。如今，只有永动机在申请专利时才需要模型。
Results LWP could significantly reduce the ulcer index and hemorrhagic spots in different ulcer models, enhance the gastrointestinal motion, be sensitive to HP.
结果利胃平可显著降低不同溃疡动物模型的溃疡指数和出血点数，可增强小鼠胃肠推动运动，对幽门螺杆菌敏感。
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