英语词汇“perforation gauge”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	perforation gauge
释义	perforation gauge Philately. a marked ruler used to measure the number of perforations per unit length along the borders of a stamp. [1890-95]
随便看	on-peak ONR on-ramp on-record onrush Onsager on-screen on-seam on-season onset onshore onside onside kick on-site onslaught Onslow onstage on-stream Ont. on-target Ontario on-the-job on-the-record On the Road on-the-scene

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