It points that the lead tolerance in molten iron should be under 0.0008% if the reject rate is controlled under 0.5% in casting the complicated engine cylinders.
指出在生产这类复杂零件时，要将缸体渗漏废品率控制在0.5%以下时，铁液中铅的含量要控制在0.0008%以下。
It points that the lead tolerance in molten iron should be under 0.0008% if the reject rate is controlled under 0.5% in casting the complicated engine cylinders.
指出在生产这类复杂零件时，要将缸体渗漏废品率控制在0.5%以下时，铁液中铅的含量要控制在0.0008%以下。
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