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。
Due to the fact that the unreasonable product structure affects the economic benefit of the mine, and caus the waste of coal resources.
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。
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.
从企业自身的角度看，有产品结构不合理、经营管理水平低，技术装备落后，产品质量差等问题。
Look from the Angle of the business per se, there is low the product structure beyond reason, the operating management level, the technique equipage lag, the product quality bad etc. subject.
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