Using this device can control the test point of contact line in shortcircuit and heat cycle experiment of catenary , as a result , the temperature of contact line can be measured.是什么意思_Using this device can control the test point of contact line in shortcircuit and heat cycle experiment of catenary , as a result , the temperature of contact line can be measured.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句