该电路建立在一个简单的异或非逻辑门和延迟线的基础上，通过抽样调查异或非门的输出来检测电路的错误点，引入的多余面积很少。
The circuit is based on a simple XNOR logic gate and delay lines to sample the output of the XNOR gate, so very little area is introduced.
现在，绝大多数居住在城市中的夫妻的住房面积都要比过去小得多，因此他们也没有多余的空间存放那些难得一用的器具。
Couples in most urban areas typically live in smaller homes compared with the past, and they lack space to store gadgets or items they will use only occasionally.
现在，绝大多数居住在城市中的夫妻的住房面积都要比过去小得多，因此他们也没有多余的空间存放那些难得一用的器具。
Couples in most urban areas typically live in smaller homes compared with the past, and they lack space to store gadgets or items they will use only occasionally.
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