potassium metabisulfite 中文意思是什麼
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Photographic grade potassium metabisulfite, k2s2o5
攝影用化學藥品.焦亞硫酸鉀 -
Photography - processing chemicals - specifications for potassium metabisulfite
照相.加工處理藥液.偏亞硫酸氫鉀規范
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