spot frequency noise factor点: drop频: frequent噪声: noise; stew; swishing; yawp; ...因数: factor; coefficient隔噪声因数: noise insulation factor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:点频噪声因数，即可在微信中查询翻译
