The main difference is that instead of relying on low-pressure mercury vapour in a longish twisted tube, the HIDs in headlamps use xenon gas under high pressure in a tough little quartz package.是什么意思_The main difference is that instead of relying on low-pressure mercury vapour in a longish twisted tube, the HIDs in headlamps use xenon gas under high pressure in a tough little quartz package.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句