dust-proof and noise block-down防尘降噪
block down sb堵住某人
Low Noise Block Down Converter头学名低噪声降频器;降频器
Low Noise Block Down-converter低噪声块下变频器;低噪声阻断转换器
down block不拦网
block operation by pressure down压力闭锁
Chase-down Block追身盖帽
tie down block压杠
punck-down block翻译