这个新版本具有以下优点。
本发明具有以下优点:体积小,重量轻,成本低,可靠性高。
The invention has the advantages of small cubage, light weight, low cost and high reliability.
本发明具有以下优点:体积小,重量轻,成本低,可靠性高。
The invention has the advantages of small cubage, light weight, low cost and high reliability.
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