Its overall structure is shown in figure 1.

其总体结构如图1所示。

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Its overall structure is simple, reliable and safe and needs lower procurement and operation cost.

其整体结构简单可靠安全、购置及使用成本均低。

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Its overall structure is simple, reliable and safe and needs lower procurement and operation cost.

其整体结构简单可靠安全、购置及使用成本均低。

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