To analyze the reasons for the secondary operation.
目的分析臀肌挛缩症二次手术产生的原因。
Advantages of the membrane system were easy operation, small footprint, no secondary waste...
膜系统操作简单，占地少，没有二次污染。
The secondary function is consisted of calculating and retrieval operation.
设有计算和检索的辅助功能。
The secondary winding offering the 110,220V voltage is used for power supply to operation machine.
二次绕组中还带有110，220V输出电压端子供操作机构作电源。
The secondary winding offering the 110,220V voltage is used for power supply to operation machine.
二次绕组中还带有110，220V输出电压端子供操作机构作电源。
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