The results were attained in the experiments: by using the method of ultrasonic vibrationtreatment, the value of porosity volume is decrease obviously.
研究结果表明,采用超声波振动处理的方法,可显著地降低铸锭内的含气量。
2
The process index of aerobiosis exposural pool treatment method can be selected by aerobiosis vibration bottle.
可以通过好氧振荡瓶培养法来选择好氧曝气池处理法的工艺参数。
3
Then, analyzes and compares methods of processing vibration signal in used, involves pretreatment methods and secondary treatment methods.