最佳实践是将每个核心组配置为具有两个首选的协调服务器，最好位于非集群式服务器和不同的物理服务器上。
Best practices recommend that each core group be configured with two preferred coordinator servers, ideally located on non-clustered servers and on different physical machines.
该雷达具有两个固定平面阵天线，每个扇形覆盖90度，从而实现同步覆盖180度。
The radar features two stationary planar array antennas, each covering a sector of 90 degrees, thus achieving 180 degrees of simultaneous coverage.
耦合使每个离子都具有了两个电子的特征频率。
Coupling associates each ion with both characteristic frequencies.
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