基本解释[电] 绝缘垫圈词组短语短语insulating concrete washer 绝缘垫圈heat -insulating washer 绝热垫圈pressure spring insulating washer 压力弹簧隔热垫圈clutch spring heat insulating washer 离合器弹簧绝热垫片专业释义动力与电气工程绝缘垫圈