# ηm

## Chinese translation: nano meter

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 03:27 Mar 15, 2007
English to Chinese translations [PRO]
Tech/Engineering - Environment & Ecology / lighting/optics
 English term or phrase: ηm The UNI 10840 regulations "Scholastic Classrooms – General criteria for artificial and natural light" indicate requirements for natural light. Set values for the average daylight component ηm must be guaranteed for the larger part of the classroom >= 3. This value is subject to the reflection index of the internal walls, the dimensions of the clear glass surfaces, the characteristics of the glass (including its levels of luminous transmission), and the window variable. The central sentence in Italian: "devono essere garantiti determinati valori del fattore medio di luce diurma ηm, per la maggior parte delle aule >= 3." m为右下角小标，猜是指平均。平均日光值？比值？这个3是个什么概念？谢谢指教。
 Local time: 20:35
 Chinese translation:nano meter Explanation:1 ηm = 10^-9 meter, so 3 ηm here is the wavelength of the daylight.
Selected response from:

Jian Zhang
United States
Local time: 05:35
 谢谢，不过这里的m为角标，似乎不像在指meter，另外，纳米是不是只是nm，并非这里的η符号？4 KudoZ points were awarded for this answer

3 +1nano meter
 Jian Zhang

33 mins   confidence: peer agreement (net): +1
î·m
nano meter

Explanation:
1 ηm = 10^-9 meter, so 3 ηm here is the wavelength of the daylight.

 Jian ZhangUnited StatesLocal time: 05:35Native speaker of: ChinesePRO pts in category: 4
 谢谢，不过这里的m为角标，似乎不像在指meter，另外，纳米是不是只是nm，并非这里的η符号？

agree
 4 days

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