... 差分热电偶 differential thermocouple 差分温度系数 differential temperature coefficient 差分阻值变化 differential resistance change ...
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temperature differential coefficient 温差指数
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Differential temperature drawing in deep sleeve parts can reduce coefficient and times of drawing, then cut down the cost.
用温差拉深工艺成形深筒形件能大幅度降低拉深系数，减少拉深次数，降低生产成本。
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