three-element filter 三元件滤波器
On a new experimental set-up of filter with three ceramic filter elements, the transient velocity outside the filter element is measured by hot-wire anemometer during pulse-jet cleaning process.
在由三根陶瓷滤管组成的实验装置上，利用热线风速仪对脉冲反吹时滤管外瞬态流场进行了测定，分析了喷吹压力、脉冲宽度、过滤气速和喷吹距离对滤管外流场的影响。
And if a filter element needs to be replaced three times in an year in an offshore turbine, it may be difficult to be classified as a service friendly turbine.
试想如果海上涡轮机一年内需要更换三次滤芯，那么很难把它归类为易维护的涡轮机行列。
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