As the pores exist, the result of electroplating the ferrous powder metallurgic parts is very bad.
由于孔隙的存在，铁基粉末冶金零件的电镀效果均不理想。
The performances of the corrosion inhibitor were studied by ferrous powder method and dynamic weight-loss method.
铁粉法利用测定腐蚀油样中的铁含量来测定腐蚀速率；
The above materials cover pigment, dyes, ferrous powder, cement, fly ash, dried mortar powder, antimony oxide, talc powder and calcium carbonate.
颜料、染料、铁粉、水泥、粉煤灰、干粉砂浆、氧化锑、滑石粉、碳酸钙等。
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