接触不良jiēchùbùliángMeanings1. loose or defective contact (elec.)Characters used接to receive触to touch不no良goodExamples1本来běnlái以为yǐwéi是shì开发kāifā板pàn给gěi我wǒ弄坏nònghuài了le，原来yuánlái是shì插头chātóu接触不良jiēchùbùliáng。At first I thought the development board was up the spout, but it was just a loose connection.