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儀表閥門執(zhí)行機構的行程特性:行程百分數與膜片壓力之間的關系,它可以用于說明固有的或安裝的特性。閥內件(Trim):除閥體、上閥蓋組臺等及下法蘭外的閥體組合件部分,它暴露在流體介質中,并與管線中的流體相接色。]]>
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