“direct positive”的概念、定义、翻译、参考文献-科学参考

单词	direct positive
释义	direct positive [dǝ¦rekt `päz·ǝd·iv] ^{GRAPHIC ARTS} A photographic positive made by exposure to light and developed without a negative.
随便看	cathode follower cathode glow cathode interface capacitance cathode interface impedance cathode keying cathode layers cathode modulation cathode ray cathode-ray oscillograph cathode-ray oscilloscope cathode-ray output cathode-ray storage tube cathode-ray tube cathode-ray tuning indicator cathode-ray voltmeter cathode resistor cathode spot cathode sputtering cathodic coating cathodic disbonding cathodic inhibitor cathodic polarization cathodic protection cathodoluminescence cathodophosphorescence

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