| 1. | Material illustrating detailed structure of graptolites has been etched from limestone by means of hydrofluoric acid .
表明笔石详细构造的物质是利用氢氟酸从石灰岩中侵蚀出来。 |
| 2. | Kerogen analyses, however, require preliminary isolation of the kerogen by hydrochloric and hydrofluoric destruction of the inorganic minerals .
但是，油母岩分析需要使用盐酸和氢氟酸破坏无机物以便初步分离出油母岩。 |
| 3. | Subject to mild attack by aqua and or hydrofluoric acid
在王水和氢氟酸中稍有腐蚀 |
| 4. | Chemical reagents . hydrofluoric acid
化学试剂氢氟酸 |
| 5. | Aqueous hydrofluoric acid for industrial use . sampling and methods of test
工业用含水氢氟酸.取样和试验方法 |
| 6. | A case of hydrofluoric acid poisoning treated by venous injecting of calcium gluconate
静脉补钙抢救氢氟酸中毒1例报告 |
| 7. | Silica refractories - determination of silicon dioxide content - hydrofluoric acid gravimetric method
氢氟酸重量法测定二氧化硅量 |
| 8. | Chemical analysis of refractories . silica materials . determination of silicon rapid method by hydrofluoric volatilisation
耐火材料化学分析.硅材料.硅含量测定 |
| 9. | Chemical analysis of silica refractories - part 3 : determination of silicon dioxide - hydrofluoric acid gravimetric method
硅质耐火材料化学分析方法第3部分：氢氟酸重量法测定二氧化硅量 |
| 10. | It is insoluble in water and acid , but dissolves in caustic soda and hydrofluoric acid without separation under high temperature
不溶于水及酸，深于苛性钠、氢氟酸，受高温不分解。 |
