金属窗框 meaning in English

window frame of metal

Regarding the metallic windows , due to their exposure to external environment where rain and high humid conditions are prevalent , they are usually considered as extraneous conductive parts . the bonding connection method for extraneous conductive parts is specified in code 11 of the cop
至于一般的金属窗框，因受安装方法及外界环境等不明朗因素（如雨水及潮湿）所影响，一般都会被视为非电气装置金属部分。