“RA size”的概念、定义、翻译、参考文献-科学参考

单词	RA size
释义	RA size [¦är`ā ´sīz] ^ENGINEERING One of a series of sizes to which untrimmed paper is manufactured; for reels of paper, the standard sizes in millimeters are 430, 610, 860, and 1220; for sheets of paper, the sizes are RA0, 860 × 1220; RA1, 610 × 860; RA2, 430 × 610; RA sizes correspond to A sizes when trimmed.
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