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。
Product structure is extremely unreasonable, the low end is held very much.
产品结构极不合理，低端太盛。
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。
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