| 1. | Health standard for cyclonite in the of workplace
车间空气中三次甲基三硝基胺 |
| 2. | The methylene blue photometric method for determination of sulphur
次甲基蓝光度法测定硫 |
| 3. | One " 999 . 9 gold prestige card series no . 6 ( year of the monkey )
岁次甲申(猴年)记事册乙本 |
| 4. | Chemical reagent . hexamethylene - tetramine
化学试剂六次甲基四胺 |
| 5. | Hexamethylenetetramine for industrial use
工业六次甲基四胺 |
| 6. | The methylene blue photometric method for the determination of sulfur content
次甲基蓝光度法测定硫量 |
| 7. | One " lunar new year series no . 6 ( year of the monkey ) souvenir card
生肖系列六号(岁次甲申?猴年)纪念卡乙张 |
| 8. | Determination of boron content - extraction - methylene blue spectrophotometric method
次甲基蓝萃取分光光度法测定硼量 |
| 9. | The reducing distillation - methylene blue photometric method for the determination of sulfur content
次甲基蓝光度法测定硫量 |
| 10. | Good morning and welcome to the issuing ceremony of " year of the monkey " special stamps
欢迎莅临今日“岁次甲申(猴年) ”特别邮票发行仪式。 |
