Due to the fact that the unreasonable product structure affects the economic benefit of the mine, and caus the waste of coal resources.
由于产品结构不合理影响全矿经济效益，造成煤炭资源的浪费。
At present, there are some disadvantages such as unreasonable structure of product, inferior quality, insufficient of originality innovation and so on in the inverter welding power.
目前我国逆变焊接电源存在的问题主要体现在产品结构不合理、质量不过关和创新性不足等方面。
Meanwhile, there is still has some disadvantages as product structure of the travel too single and the receiving facility structure is unreasonable.
同时，也存在旅游产品结构单一、接待设施结构不合理等劣势。
Meanwhile, there is still has some disadvantages as product structure of the travel too single and the receiving facility structure is unreasonable.
同时，也存在旅游产品结构单一、接待设施结构不合理等劣势。
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