... 下游阀 downstream valve 下游管 dow tream tube; downstream tube 下游键 dsdown-stream key; dsk down-stream key ...
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The hottest position of the tube is at the exit, so the heat protection is needed at the downstream part of the tube.
套管壳体的最高温度出现在套管出口位置，应适当加强套管末段的热防护。
The plasma tube assembly also has a plasma-sustaining region defined by an upstream plurality of plasma traps and a downstream plurality of plasma traps.
该等离子管总成还具有由上游多个等离子阱和下游多个等离子阱限定的等离子保持区域。
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