Sapphire
D:s 距离比
一个越南客户叫我帮他买红外线测温仪，同时把参数发给他。碰到这个“ D：s =50：1”，他问我是什么意思，我就随便解释：那个是标准的距离：红外线测温仪离被测温的东西的空间与被测温的那个东西的尺寸。
Sep 1, 2014 12:51 PM
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Sapphire
Language Skills
Chinese (Mandarin), English, Korean, Malay
Learning Language
Chinese (Mandarin), English, Korean
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