regular gray iron
... 破裂区，破裂带zoneoffracture 普通灰口铸铁regulargrayiron 普通石墨commongraphite ...
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普通灰〔口〕铸铁 regular gray iron
普通灰[口]铸铁 regular gray iron
依据铸铝坩埚的服役条件，制造工艺和成本要求，选择中硅耐热球铁取代普通灰口铸铁制造铸铝坩埚。
Medium silicon heat-resisting nodular cast iron has been chosen instead of common grey iron to make cast aluminium crucible according to the work condition. making process and cost of the crucible.
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