In fact, each unit volume of fuel combustion, about 1 million to unit volume of air through the filter.
事实上，每单位体积的燃油燃烧时，约需要有1万单位体积的空气通过滤清器。
2
The trap based filter radiometer is a key unit of new optical radiometric standard detectors, and has potential applications in radiometric calibration of field, air borne and space borne sensors.
基于滤光片辐射计的新型光辐射标准探测器在野外、机载和星上高精度辐射定标中具有广阔的应用前景。
3
The filterunit 60 is provided with a lint filter 61 and a duct communicating with an air outlet 46 and an air introduction opening 47 is formed.