短语词组短语ceramic c insulator 陶瓷绝缘子ceramic insulator sensor 支柱瓷绝缘子式传感器Spark plug ceramic insulator specifications 火花塞瓷绝缘体技术条件insulator ceramic [电]绝缘陶瓷ceramic or glass composite insulator 瓷或玻璃复合伞裙绝缘子 返回 ceramic insulator