用化学

• Photographic grade 1 - phenyl - 3 - pyrazolidinone
  摄影用化学药品. 1 -苯基- 3 -吡唑烷酮
• Drinking water treatment chemicals - health effects
  饮用水处理用化学制品.健康影响
• Photographic grade sodium sulfite , anhydrous , na2 so3
  摄影用化学药品.无水亚硫酸钠
• Photography chemicals - acetic acid , 28 % solution
  摄影用化学药品. 28醋酸溶液
• Photographic grade potassium metabisulfite , k2s2o5
  摄影用化学药品.焦亚硫酸钾
• Photography processing chemicals - sodium hydroxide
  摄影用化学药品.氢氧化钠
• Chemical products for industrial use . sampling . terminology
  工业用化学制品.取样.术语
• Recommendations for names for chemicals used in industry
  工业用化学物质命名的推荐方法
• He experimented with chemicals and electricity
  用化学药品和电进行试验。
• Research advances of chemicals for oil production
  采油用化学剂的研究进展