The modern airplane design works well, but from a fuel efficiency standpoint, could planes be designed more aerodynamically — to lower drag and increase lift?
The machine can lift quickly, has high production efficiency, good usage functions, simple structure, convenient to operate and repair, reliable safety protection instrument.
该机可采用快速提升，生产率高，使用性能良好，结构简单，易于操作维修，安全保护装置齐全可靠等特点。
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Old drying stove is re-equiped into far infrared heating drying stove for underground machinery repaired. It can lift repair efficiency, save power and safety and reliable.