Some technicians use the infrared exhaust analyzer to quickly detect small vaporlosses from around fuel tank.
有些技术员利用红外线排气分析仪来迅速检测燃油箱周围的少量的蒸气泄漏。
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There are various scary and preventative writings, for example, this one means that using too much vapor during travel would lead to time losses on the way.