positive crankcase ventilation filter element 曲轴箱强制通风滤清器滤芯
filter ventilation 过滤式通风
filter-ventilation radiometer 过滤通风射计
Air Filter Units for Ventilation 通风用空气过滤器装置和电动空气清洁器的试验方法
gas-filter ventilation unit 滤毒通风装置
Air compressor oil in the water, first released. Thorough cleaning and check spray barn, ventilation filter. Cleaning spray baking room on the ground.
空气压缩机内的水份，油质必先释出。彻底清洗、查看喷塑烤房、通风滤网。清洗喷塑烤房地上。
Nicotine yielded a less complex model, with ventilation again serving as the largest predictor (40% of variance), with tobacco weight and filter length serving as significant contributors.
有关尼古丁的模型复杂程度较低，过滤嘴的通风性能再次成为最大的预报器，影响比例占到40%，与此同时，烟草重量和过滤嘴长度同样产生重要影响。
Lastly, the measurements of the cigarette filter ventilation and pressure drop were taken using a KC3 combined dilution/pressure drop instrument (Borgwaldt-KC, Richmond, Virginia, USA).
最后，采用结合稀释/压力差仪器（美国弗吉尼亚时士满Borgwaldt-KC）的KC3进行香烟过滤器和压力差的测量。
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