本文对直列式多缸发动机气门调整方法进行了探讨，推荐一种新的方法。
This paper holds a discussion on methods of adjusting in line engine valves and recommends a new method for that.
以网络信息流分解为基础，利用范德·蒙德行列式的性质设计多播码字，在多播组成员固定的条件下实现不同维数多播码字的转换。
Based on information flow decomposition, multicast code of different dimensions in the case of fixed multicast members is constructed by exploiting the property of Vandermonde determinant.
为了更好地适应两轮车系统的视觉导航及多车对接所具备的稳定性需要，设计了一种变驱动半径的两轮并列式月球车系统模型。
For more stability for the (vision) navigation and docking of lunar rovers, the lunar rover model with two parallel wheels was designed which has changeable driving radius.
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