The automatic assemble machine utilized the free falling body assemble method, presented in the paper.
自动装配机利用了本文提出的自由落体式装配方法。
Methods:The methods of opening skull and free falling body was used to cause open cerebral laceration in rats.
方法：采用开颅和自由落体法相结合，造成开放性脑挫裂伤大鼠模型。在Y型水迷路中测定大鼠的记忆力；
Based on the Law of Energy Conservation, this paper educes a more accurate and more generalized formula of free falling body.
从能量守恒定律出发导出精确度更高、更具普遍意义的高空自由落体公式。
The rotation of the earth influences the deviation of free falling objects. This paper, taking the northern for example, puts forward one exact solution to the deviation of free falling body.
地球自转影响自由落体的偏离。本文以北半球为例给出了求自由落体偏离问题的一种精确解法。
By using perturbation mode, we study the free falling eastward body, and present the first approximate calculation formula of the rotation angular velocity of the earth.
应用微扰论的方法对落体偏东进行研究，给出了在地球自转角速度一级近似下的计算公式。
By using perturbation mode, we study the free falling eastward body, and present the first approximate calculation formula of the rotation angular velocity of the earth.
应用微扰论的方法对落体偏东进行研究，给出了在地球自转角速度一级近似下的计算公式。
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