Moreover, the device has simple structure and convenient adjustment.
且装置结构简单，调整方便。
The device has simple structure and low cost.
本装置结构简单，成本低廉。
The device has simple structure, convenient control and low cost.
设备结构简单，控制方便，成本低廉。
The device has simple structure, stable performance, convenient and safe use and easy promotion.
此装置结构简单、性能稳定、使用方便安全、便于推广。
The device has simple structure, stable performance, convenient and safe use and easy promotion.
此装置结构简单、性能稳定、使用方便安全、便于推广。
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