双语例句
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The valve face is provided with a pilot hole or a micro fixing valve.
阀面上 冲有导向孔或微型固阀。
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If it is found there is damage to the valve face should be immediately suspended, can be specialized material repair the lesion, or entrust the relevant units of production.
若发现阀门面有损坏时应立即停用，可用专门材料修补患处，或委托有关生产单位生产。
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No matter how the valve is installed, the back of the upstream seat protects the face of the downstream seat.
无论阀门如何安装，上游阀座的后背都能够保护下游阀座的表面。
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