外露金属部分 meaning in English

exposed metallic part

Main switch exposed metal parts not earthed
总开关掣的外露金属部分并无接地。
The reactor is adopted dry - type air - cored structure and its coil is made of high quality naked copper wire . the epoxy bakelite block is used as underlay between coil trays , entire coil is firmed with unmagnetized clamps and the bare metal part of reactor is covered by anti - corrosive material
电抗器为干式空心简式结构，线圈用优质裸铜线制作，线盘间垫环氧酚醛布板块，整个线圈用无磁性夹件紧固，电抗器外露金属部分有良好的防腐蚀层。