在管道通风系统中的湍流区内，震荡波动的阻力气压与推力气压之间的关系已被阐述。
The relationship between the fluctuating drag and lift pressures in the turbulent area within a flow duct is given.
如果你使你一半的身体波动太大的话，将会增加阻力使你速度减慢。
If you undulate half your body too much it will create resistance and slow you down.
使用传统滤料的袋式除尘器在操作过程中存在过滤阻力高且随时间波动大、对于微细粉尘过滤效率低、反清洗频率高等缺点。
The shortcoming of traditional filter media, such as high and fluctuating resistance, low efficiency for very small size dust, high frequency of regeneration etc.
应用推荐