The six — wavelengths pyrometers with six interference filters for effective wavelength defined and with optical fibers for beam split were developed by the U. S. and CEC scientists inl980's.

八十年代以来，美国及欧共体研制成采用干涉滤光片限定工作波长及带宽的六波长高温计，而分光采用光导纤维。

youdao

The six — wavelengths pyrometers with six interference filters for effective wavelength defined and with optical fibers for beam split were developed by the U. S. and CEC scientists inl980's.

八十年代以来，美国及欧共体研制成采用干涉滤光片限定工作波长及带宽的六波长高温计，而分光采用光导纤维。

youdao