短語詞組短語Filth blockage [制冷]臟堵blockage signal 堵煤信號paraffin blockage 蠟堵blockage ratio 阻塞比active blockage [金融]主動(dòng)禁止兌換Nitrogen blockage 氮塞Light Blockage 光阻法blockage calculation 堵塞計(jì)算 返回 blockage