luminance density 中文意思是什麼
luminance density
解釋
發光密度-
This product to dongshi kong, white sand getting cream - coloured density loose, high marble renovate and polishing treatment when maintaining of absorbing water etc. speciality, treated, can form the brilliant hard mere membrane layer on this kind of marble surface, improve the density of stone material surface and wear - resisting degree, the color and luster is even, and the luminance keeps time long, the professional stone material to turn over and maintain personages special - purposly
本品專業對孔洞石、白砂米黃等密度疏鬆、吸水率高的大理石翻新及養護時拋光處理，處理后，可在該類大理石表面形成晶硬光膜層，提高石材表面密度及耐磨度，色澤均勻，且光亮度保持時間長，系專業石材翻養護人士專用。 -
The second chapter briefs the fundamental principles and methods of photometric and colorimetric measurement, including the measurement principia of luminous density, luminous flux, luminance and chrominance
第二章闡述了光度和色度測量的基本原理，測量的方法及其儀器的工作原理。 -
Observations of " uminance - current density - voltage relations at constant voltage driving were repeated. the decrease of both luminance and current density during constant voltage driving was observed
經研究發現通過中斷器件工作時所加電場或者加反向電場，器件工作過程中發生的衰變在一定程度上是可恢復。
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