英语词汇“relation calculus”的读音、翻译、释义、用法及例句-语文网

词汇	relation calculus
释义	relation calculus 关连演算对关连式资料库进行查询的一种表示方法，其要点是引入述词演算，把查询表达成满足结果元组的某种述词。
随便看	inoculator inoculum i-node i-node i-node number i-node number i-node tab i-node tab inodorous inoffensive inoffensively inofficious in on in one piece in one respect in one's element in one's favor in one's heart of hearts in one's mind's eye in one's own good time in one's own right in one's own way in one's place in one's power in one's right mind

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