凹印痕 的英文怎麼說
中文拼音 [āoyìnhén]
凹印痕
英文
plate mark-
Invisible ink, pi ricks and indentatio on letters were all used to convey details of troop movements, bombing raids and ship - building
信中的隱性墨水、針眼和印凹痕都透露著部隊動向、炸彈突襲和軍艦裝備等信息。Invisible ink, pinpricks and indentations on letters were all used to convey details of troop movements, bombing raids and ship - building
信中的隱性墨水針眼和印凹痕都透露著部隊動向炸彈突襲和軍艦裝備等信息。
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