“designation punch”的概念、定义、翻译、参考文献-科学参考

单词	designation punch
释义	designation punch [´dez·ǝg`nā·shǝn ´pǝnch] ^{COMPUTER SCIENCE} A hole in a punched card indicating what is the nature of the data on the card or which functions are to be performed by the computer. Also known as control hole; control punch; designation hole; function hole.
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