水平气流 meaning in English

advectional current

The impact on performance of wheat classified by horizontal airflow velocity , classifying baffle height and dropping time etc was studied , the orthogonal experiment was designed on the basis of single factor experiment , and the primary and secondary factors of impact on horizontal classification of the heavy wheat were educed : classifying baffle height , horizontal airflow velocity , dropping time ; the primary and secondary factors of impact on horizontal classification of the light wheat : horizontal airflow velocity , classifying baffle height , dropping time
摘要研究了水平气流速度、分级隔板高度和落料时间等因素对小麦气流分级的性能影响，并在单因素试验的基础上设计了正交试验，得出影响重质小麦水平分级的主次因素为：分级隔板高度、水平气流速度、落料时间；影响轻质小麦水平分级的主次因素为：水平气流速度、分级隔板高度、落料时间。