vertical unidirectional airflow垂直: perpendicular; vertical; squ ...单向: one-way; unidirectional; sim ...单向流: unidimensional stream; unidirectional airflow; unidirectional flow; uniflow垂直单极: vertical monopole垂直单极，垂直单极天线: vertical monopole下载手机词典可随时随地查词查翻译
