“Spectra Pritchard photometer”的概念、定义、翻译、参考文献-科学参考

单词	Spectra Pritchard photometer
释义	Spectra Pritchard photometer [`spek·trǝ `prich·ǝrd fǝ`täm·ǝd·ǝr] ^OPTICS A photoelectric instrument for measuring the luminance of surfaces; it has a telescopic viewing system for imaging the bright surface to be measured on the cathode of a photoemissive tube, and a separate unit that combines the power supply with the controls and readout meter.
随便看	single density single-drift flight single-edged push-pull amplifier circuit single-effect evaporation single-end amplifier single-ended single-ended ferry single-ended Q machine single-ended signal single-ended spread single-event upset single-frequency duplex single-frequency simplex single-gun color tube single-hand drilling single-heading flight single-hop transmission single-impulse welding single in-line memory module single in-line package single-instruction-stream, multiple-data-stream single-instruction-stream, single-data-stream single-J groove weld single-keyboard point-of-sale system single knock-on

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