液体

• The liquids employed for rocket propulsion are called propergols .
  用于火箭发动机的液体称为液体火箭推进剂。
• They may be liquids, solids, or gases that are dissolved in liquids .
  它们可能是液体、固体或溶于液体的气体。
• The heat from the water is used to vaporize a low-boiling liquid .
  从水中得到的热用来使一种低沸点的液体蒸发。
• But if we heat it in a furnace it will melt and become a liquid .
  但如果放到熔铁炉内加热，它就会熔化成为液体。
• If the fluid is agitated, the thickness of the surface layer become reduced .
  如果液体被搅拌，则表层厚度将减小。
• Flow of gas or liquid due to a pressure difference is called viscous flow .
  由于压力差引起的气体或液体流称为滞流。
• Choice of stabilizer in emulsion systems has always been rather empirical .
  在乳液体系中，稳定剂的选择往往凭经验。