| 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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