In printing, micrometers are used to measure caliper, or thickness of paper and board, the thickness of blankets, plates, packing and other materials.是什么意思_In printing, micrometers are used to measure caliper, or thickness of paper and board, the thickness of blankets, plates, packing and other materials.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句