“B size”的概念、定义、翻译、参考文献-科学参考

单词	B size
释义	B size [`bē ´sīz] ^ENGINEERING One of a series of sizes to which trimmed paper and board are manufactured; for size BN, with N equal to any integer from 0 to 10, the length of the shorter side is 2^-N/2 meters, and the length of the longer side is 2^(1-N)/2 meters, with both lengths rounded off to the nearest millimeter.
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