boundary layer observation观测: observe; observation; viewin ...附面层烟雾法观测: boundary-layer observation with smoke附面层: blanket; boundary-layer flow; frictional boundary layer电离层观测台: ionospheric observatory定点分层观测: serial observation下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:附面层观测，即可在微信中查询翻译
