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.
VDR基因能控制血清中的钙三醇含量，从而控制钙的吸收，并反过来影响骨骼中铅的蓄积。
VDR gene has been implicated in the control of calcitriol levels in serum, which normally regulates calcium absorption and can in turn affect lead levels.
在该程序中，只需输入富铅渣成分及相关参数，便可得到熔炼产物成分及含量表和配料指导，意在实现此工艺过程的自动化控制。
Entering composition of enriched-Pb slag and correlative parameters, composition of smelting products and charge guidance were obtained. And the process would be controled automatically.
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