The catchers at first base and third base simulate proper footwork and throwing fundamentals while throwing to each other, just as the catchers do at home plate and second base.
模拟二垒阻杀(即对角线传球)，一垒和三垒，本垒和二垒，进行传接球。
The first is to extend the coverage area of one base station. The second is to eliminate the coverage holes. The third, to enhance the throughput on the cell edge.
讯号转换中继台的建置有三个目的，一为拓展基地台之覆盖范围，二为消弭覆盖范围内的死角，三是提升基地台覆盖边缘的吞吐量。
The invention provides a device for rotating a multi-shuttle box, which is characterized in that a base is provided with a first bracket, a second bracket and a third bracket;
本发明提供了一种旋转多梭箱装置，其特征在于，底座上设有第一支架、第二支架以及第三支架；
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