In this paper, the effect of additive boron on the diamond synthesized using pure iron powder catalyst was studied.

本文研究了添加剂硼对纯铁粉末触媒合成金刚石的影响。

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The effect of additive content, phosphating temperature and time on corrosion resistance of phosphate film was studied.

研究了添加剂的用量、磷化温度及磷化时间对磷化膜耐蚀性的影响。

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The effect of additive varieties, bath temperature, current density and plating time on the satin nickel coating are also discussed.

同时还研究添加剂的种类、镀液温度、电流密度、电镀时间对镀层性能的影响。

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This problem is compounded by the possible presence of multiple chemicals which together have an additive effect that greatly increases the lethal action of any single chemical.

CNN: Chemicals killing Florida birds, fish