涂層光(guang)(guang)澤度儀(yi)通(tong)過從一(yi)(yi)個角(jiao)度向(xiang)被(bei)測表面發射(she)強度不(bu)變的(de)光(guang)(guang)束，然后監測同(tong)(tong)一(yi)(yi)角(jiao)度反射(she)光(guang)(guang)的(de)量來測量光(guang)(guang)澤度。光(guang)(guang)澤度不(bu)同(tong)(tong)，要(yao)求的(de)角(jiao)度也不(bu)同(tong)(tong)。
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