특수강에 첨가하는 원소가 금속성질을 개선하는 것을 설명한 것 중

특수강에 첨가하는 원소가 금속성질을 개선하는 것을 설명한 것 중에서 옳은 것은?
① 기계적 성질을 감소시킨다.
② 담금질성을 감소시킨다.
③ 화학적 성질을 감소시킨다.
④ 내마모성을 향상시킨다.

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The elements to add a metallic quality special steel to improve among the right as described?① reduces mechanical properties.② quench reduces the Castle. ③ reduce the chemical properties. ④ improve abrasion resistance.

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Results (English) 2:[Copy]

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It is an element to be added to the right from the special steel being described to improve the metal properties?
① to reduce the mechanical properties.
Thereby reducing the hardenability ②.
③ reducing chemistry.
④ to improve the wear resistance.

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Results (English) 3:[Copy]

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add in the special steel is to improve the properties of the elements of metal, that is, the right to be.① mechanical properties decreased.the ② water decreased.③ chemical properties decreased.④ wear resistance will improve.

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