针式绝缘子; 针形绝缘子

pin type support insulator pin type insulator insulator PIN pin stone insulator wall insulator stick insulator ceiling insulator stay insulator organic insulator insulator pin cap-and-pin insulator straight pin porcelain insulator high-voltage pin insulator cap and pin insulator high tension pin-type insulator pin insulator for telephone line pin type insulator for high voltage line low tension line pin-type insulator pin type insulator for low voltage line