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大大提供垫片机械强度和密封性能。
Significantly to provide mechanical strength and sealing performance of gaskets.
youdao
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该泵采用机械密封，密封性能好。
The pump use of mechanical seal, sealed performance is good.
youdao
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该泵采用机械密封，密封性能好。
The pump use of mechanical seal, sealed performance is good.
youdao