The main defects and their prevention for ductile iron parts in investment casting were analyzed.
分析了精铸球铁的主要缺陷及其防止方法.
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The mechanical properties of nodular cast iron can be further improved by isothermal quenching.
等温淬火处理可进一步提高球墨铸铁的机械性能.
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由于再结晶, 基体得到强化,提高了球墨铸铁的综合性能.
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Liquid-quenching apparatus was used to investigate the inoculation process in cast iron.
采用液淬法研究了铸铁的孕育过程.
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The microstructure of spheroidal cast iron prepared by spray forming has been studied.
采用喷射成形工艺研究了球墨铸铁的显微组织.
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They are utterly devoid of conscience , they even humiliated these defenseless civilians.
欺辱这些手无寸铁的平民,这些人真是丧尽天良.
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This current by controlling the electromagnet to control the mechanical movement.
这样通过控制电磁铁的电流就控制了机械运动.
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二茂铁的合成方法分为化学合成法和电解合成法两大类.
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The physicochemical characteristics of ferrous glycinate were evaluated by a storage test.
通过贮藏试验,研究了甘氨酸螯合铁的理化性质.
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