短語(yǔ)詞組短語(yǔ)insulator r string 絕緣子串double insulator string 雙重絕緣子串strain insulator string 耐張絕緣子串single insulator string 單列絕緣子串insulator string broken 掉串egg -insulator string 蛋形絕緣子串kv insulator string kv 絕緣子suspension insulator string 懸式絕緣子串;懸垂絕緣子串1000 kv insulator string kv 絕緣子 返回 insulator string