在新规范中新增的测试项目便是ExpressCard产品的 信号质量测试 ( Signal Quality Test )，产品必须达到规定的信号质量要求以进一步确保主机系统插槽与模块产品间电气接口的可靠性。
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The signal quality is still low. Move the receiver closer to the wireless mouse, and then click Test Again.
信号质量仍然较低。请将接收器移动到距离无线鼠标较近的位置，然后单击“ 再次测试”。
No signal quality information was received. Move the receiver closer to your wireless keyboard, and then click Test Again.
未接收到信号质量信息。请将接收器移动到距离无线键盘较近的位置，然后单击“ 再次测试”。
By experimental simulation and test result of a certain radar recording meter, it shows that this algorithm has a higher compression rate and a better quality of signal recovery.
实验仿真和某型雷达记录仪测试结果表明，该算法具有较好的压缩比率及较高的信号恢复质量。
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