短語(yǔ)詞組短語(yǔ)Chinese mandatory national standard 強(qiáng)制性國(guó)家標(biāo)準(zhǔn)mandatory national standard 強(qiáng)制性國(guó)家標(biāo)準(zhǔn)international mandatory standard 國(guó)際強(qiáng)行規(guī)范 返回 mandatory standard