用化学

• Photography chemicals - potassium hydroxide
  摄影用化学药品.氢氧化钾
• Photography chemicals - sodium acid sulfate
  摄影用化学药品.硫酸氢钠
• The photographers developed the film by treating it with chemicals
  摄影师用化学药剂使底片显影
• Sampling of chemical products for industrial use - safety in sampling
  工业用化学产品采样安全通则
• Photography chemicals - potassium chloride
  摄影用化学药品.氯化钾
• Photography chemicals - aluminum potassium sulfate , dodecahydrate
  摄影用化学药品.十二水硫酸铝钾
• Photography chemicals - ammonium chloride
  摄影用化学药品.氯化铵
• The photographers developed the film by treating it with chemicals
  摄影师用化学药剂使底片显影。
• Chemical products for industrial use . determination of liposolubility
  工业用化学制品.脂溶度的测定
• Photographic grade formaldehyde , 37 % solution , with stabilizer
  摄影用化学药品.含稳定剂的37甲醛溶液