向溶液中鼓入纯氮气或氩气，直到溶液没有了颜色时为止。
Pure nitrogen or argon is bubbled through the solution until all color is gone.
在此种类型的某些摄影机中，鼓轮是高速转动着的。
In some cameras of this type the drum is rotated at high speed.
在质量通病防治过程中，有些材料和工程某些部位容易出现空鼓。
Some materials and the surface of construction work suffer air hole easily.
在质量通病防治过程中，有些材料和工程某些部位容易出现空鼓。
Some materials and the surface of construction work suffer air hole easily.
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