| 1. | The transparency of the powders is poor .
各种粉末的透明度是很差的。 |
| 2. | The barium sulfate must be a lump-free powder .
硫酸钡必须是无块的粉末。 |
| 3. | Inhalation of dust should be avoided .
应避免吸入粉末。 |
| 4. | Everything gained for us by civilization will crumple .
文明给予我们的一切会碎成粉末。 |
| 5. | The first utilizes a blend of finely ground ceramic powders .
第一种用的是一种磨细的陶瓷粉末混合物。 |
| 6. | Units are prepared by packing the powder into small combustion capsules .
各种小单元制备，即把粉末装入可燃小胶囊中。 |
| 7. | A small amout of light powder of cork dust is sprinkled uniformly along the tube .
少量的轻粉末或软木屑均匀地撒在管内。 |
| 8. | The coating is sprayed onto the specimen, air-dried to a soft powder .
这种涂料喷涂到试件上去并在空气中干燥之后，即成为松软的粉末。 |
| 9. | Since papyrus dries up and crumble, very few documents of ancient egypt have survived .
因草片会干裂成粉末所以古埃及的文件很少保存下来。 |
| 10. | The soft powder fired at high temperature until the ceramic particles melt and coalesce to form a glaze .
松软的粉末在高温下烧结，陶土粒子即溶结成一层瓷釉。 |
