Optical cable structure is improved in order to enhance the installation efficiency of the blowing method and to increase the length to be installed.
讨论从改进光缆结构出发来提高气送光缆的效率和延长气送光缆的距离。
This article analysed the situation of jammed leant tunnel of the coke furnace and introduced the work theory of air-blowing method as well as practic al application in the manufacturing process.
分析焦炉斜道堵塞的现状，介绍空吹法的工作原理以及在生产中的实践应用。
One method is invasive ventilation. A second method involves blowing oxygen into the lungs through a mask.
一种方法是有创通气。第二种方法是通过面罩将氧气吹入肺部。
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