短語(yǔ)詞組短語(yǔ)Ventilation hole position 通氣孔位置ventilation and security hole 通風(fēng)兼安全洞root ventilation hole 葉根通氣孔pin -hole ventilation terminal 細(xì)孔式佈風(fēng)器the complementary double -hole network ventilation 雙洞互補(bǔ)式網(wǎng)絡(luò)通風(fēng) 返回 ventilation hole