Stellite takes a high polish and is used in steel valve seat rings. Normally applied with transfer plasmar-arc; Stellite hardness is not affected by heat treatment.是什么意思_Stellite takes a high polish and is used in steel valve seat rings. Normally applied with transfer plasmar-arc; Stellite hardness is not affected by heat treatment.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句