It has the advantages of simple process, easy machining, low cost and obvious results.
本发明具有工艺简单、加工方便、成本低廉，效果显著的优点。
The present invention has less parts, simple machining, low cost and easy in-situ installation.
本发明具有设计合理、结构简单和具有较大推广价值的优点。
The present invention has less parts, simple machining, low cost and easy in-situ installation.
本发明具有设计合理、结构简单和具有较大推广价值的优点。
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