| 1. | Mixture of black powder and magnesium has a tendency to segregate .
黑药和镁的混合物具有离析的倾向。 |
| 2. | The black powdered carbon holds the suitable share in the market
黑色碳粉在市场上占有相当的份额。 |
| 3. | Genchem black granule genchem black powder
维仁黑宝 |
| 4. | Black powder for civil use
民用黑火药 |
| 5. | Small - grain black powder
小粒黑火药 |
| 6. | Black powder . it is slightly insoluble in water , soluble in sodium sulfide with a green - black colour
黑色均匀粉末,微溶于水，溶于硫化钠溶液中呈绿黑色。 |
| 7. | Explosives for civil uses - propellants and rocket propellants - determination of properties of black powder
民用爆炸物.推进剂和火箭推进剂.黑火药特性的测定 |
| 8. | Explosives for civil uses - propellants and rocket propellants - part 7 : determination of properties of black powder
民用炸药.推进剂和火箭推进剂.第7部分:黑火药性能的测定 |
| 9. | Their problem was to bind the black powder together again so it would be hard enough to serve as a writing instrument
它们的难题是如何重新组合这些黑色的粉末，使它成为有足够硬度的书写工具。 |
| 10. | Explosives for civil uses - propellants and rocket propellants - part 7 : determination of properties of black powder ; german version en 13938 - 7 : 2004
民用炸药.推进剂和火箭推进剂.第7部分:黑火药的性能 |
