In the long-term work, he found that the conversion using the traditional method of low efficiency, cost him a lot of time and effort, so he wanted to change his working methods to improve efficiency.
在长期的工作中，他发现，采用传统的转换方法，效率较低，耗费他大量的时间和精力，所以他想改变他的工作方法，以提高工作效率。
Chemical conversion treatment because of its simple, low cost, is the effective method of magnesium alloy corrosion.
化学转化膜处理因其操作简单、成本低廉，是镁合金防腐蚀的有效方法。
The method has the advantages of simple equipment, easily controlled operating condition, low production cost and high selenium chitosan oligosaccharide conversion rate.
本项发明设备简单、操作条件易于控制、生产成本低廉、得到的硒壳寡糖转换率高。
The method has the advantages of simple equipment, easily controlled operating condition, low production cost and high selenium chitosan oligosaccharide conversion rate.
本项发明设备简单、操作条件易于控制、生产成本低廉、得到的硒壳寡糖转换率高。
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