insulator 絕緣體

insulator
繁：絕緣體
简：绝缘体

鐵綫今年初因歐洲名牌、內地製造的電纜絕緣體出問題，故障接二連三，港鐵及機電署聘請的獨立專家已完成調查，東鐵綫將全綫更換同型號的電纜絕緣體，專家批評港鐵未有留意產品供應商改為內地生產的潛在風險。

東鐵全線更換問題電纜絕緣體 （2014年12月30日）。蘋果日報，取自 http://hk.apple.nextmedia.com/news/art/20141230/18985627

It had started replacing the insulators, and finished the replacement of four, before the second incident occurred. He did not explain why the company did not inform the public about the test results after the investigation.

Lee, A. (2014, February 20). MTR knew of faulty parts before East Rail Line disruption delayed thousands. South China Morning Post. Retrieved from http://www.scmp.com/news/hong-kong/article/1431297/mtr-knew-faulty-parts-east-rail-line-disruption-delayed-thousands