vertical pit-type tempering resistance furnace
...rtical pit-type tempering electric furnace：井式回火电炉 vertical pit-type tempering resistance furnace：井式回火电阻炉 vertical projector：立式投影仪 ..
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pit type tempering resistance furnace
... 井底钻头定位器 bottom hole bit locator 井式回火电阻炉 pit type tempering resistance furnace 井式淬火回火炉 pit type quench tempering furnace ...
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