powdering

• The nitramine ethers perform two functions in the smokeless powder composition .
  硝胺醚在无烟火药成份中有两种作用。
• Aluminum powder is placed in a saturated solution of ammonium perchlorate in water .
  铝粉放在过氯酸铵的饱和溶液中。
• 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。
• The other method is to pass the powder through 200 or fine mesh screen .
  另一种是把软木粉用200目或更细的筛网进行筛选。
• 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。
• Neither of the above substances gives smokeless powders an intense coloration .
  上述各物质，没有一个能使无烟药强烈着色。
• Alternatively, a reflective type of adhesive containing aluminium powder may be used .
  此外，也可采用含有铝粉的反射型粘接剂。
• It had begun to snow, a soft, windblown powder that dusted the city .
  天开始下起雪来，一阵轻柔的被风吹乱的白絮撒满了这座城市。
• Ceramic elements are made by pressing and sintering finely powdered materials .
  陶瓷元件是将仔细研磨的材料经过加压和烧结制成。
• This makes the production process for extruding the powder mass very complicated .
  这就使得压伸粉状药料的生产方式变得非常复杂。