它是用来检测拼写检查不能发现的错误，也可以检测某些语法错误。
It is used to detect errors that spell checking cannot and can also detect certain grammar mistakes.
仔细查看，就会发现硬盘事实上在扇区之间包括大量额外数据，这些额外字节由磁盘固件使用，以检测和纠正每个扇区内的错误。
When you look closer, hard disks actually include a great deal of extra data in between sectors. These extra bytes are used by the disk's firmware to detect and correct errors within each sector.
文中迈进一步仿真分析了信道估计错误对检测器的影响，发现对于较大的信道估计错误，多用户检测器比单用户检测器更敏感。
Further analyzing the effect of channel estimation error on the detectors, it is found that the multiuser detector is more sensitive to big estimation error than the single user detector.
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