mains connections 中文意思是什麼
-
Home economics - safety release devices with built - in stopcock and two g 1 2 male union connections for domestic appliances using mains supplied gaseous fuels
家庭經濟.家用管道燃氣設備用帶嵌入式旋塞和雙g1 2外螺紋連接的安全釋放裝置
分享友人