光亮度
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标题 发布/更新时间 阅读量
Plating low stress bright rhodium 2023-03-09 937
Automatic photoelectric keratometer utilizing a cathode ray tube sweep circuit which is symmetrically triggered by light from extremities of the measured surface 2023-03-12 340
Television receiver 2023-03-17 161
Electrophotographic recording element having photoconductor with quenched luminescence during charging and method of making the photoconductor 2023-03-06 126
Europium activated rare earth phosphors containing trivalent cerium brightness control 2023-03-10 417
Brightiness control circuitry for direct view storage tubes 2023-03-16 834
Smoke detector with means for compensating for variations in light source brightness due to line voltage variations 2023-03-07 798
Process including photolytic enhancement for anodic dissolution of a gallium arsenide wafer 2023-03-05 692
Light brightness meter 2023-03-15 48
Memory erasion method for 3-layer structure thin film el element 2023-03-01 795
Interrelated exposure-duration and diaphragm-setting control system 2023-02-26 721
Basic azo dyestuffs containing a heterocyclic diazo component and a para-N-tertiary or quaternary heterocyclic amine alkylene amino benzene coupling component 2023-02-28 829
Driving method for a thin-film electroluminescent element of a three-layer construction 2023-03-11 213
Systems for responding to non-uniform scene brightness 2023-03-02 731
Optical glasses with improved varying partial dispersion in the optical positional range of lanthanum crown glasses and lanthanum flint glasses 2023-03-03 115
Method of making a manganese-activated zinc sulphide electroluminescent powder 2023-03-04 377
Camera with automatic exposure-determining structure 2023-03-08 157
製紙、紙漿及製漿法 2023-02-27 481
鋁片藝術及製造方法 2023-03-14 121
光亮度限制器 2023-03-13 131
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