本文提出了一种能实时完成二进制逻辑运算的光学并行处理系统，并给出了作为半加法器的实验结果。

A real time optical logic processor is presented, that can perform binary logic operations in parallel. Experimental result is given of the system as a half adder.

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参加法语和德语会考的小学生自2001年来已经少了一半，即便那个时候分别也不过347000和135000人。

Numbers of pupils taking French and German GCSEs have fallen by nearly half since 2001, but were low even then at 347, 000 and 135, 000 respectively.

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本文主要研究加法幂等元满足置换等式的纯整半环。

This paper deals with orthodox semirings whose additive idempotents satisfy permutation identities.

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