球擊硬化 的英文怎麼說
中文拼音 [qiújīyìnghuà]
球擊硬化
英文
peen hardening-
Abstract : the structure and the properties of the grinding ball made of the composite cast iron have been researched in this paper. the result indicates that added trace boron and a proper quantity copper to this kind of composite cast iron can increase its quench - hardening ability, and raise its hardness and impact toughness
文摘:研究了一種復合鑄鐵磨球的組織和性能,結果表明,化學成分和淬火工藝對這種復合鑄鐵磨球的組織和性能有很大影響,微量的硼和適量的銅可以明顯地提高磨球的淬透性,經過余熱淬火得到貝氏體或馬氏體基體組織,從而提高磨球的硬度和沖擊韌性。Autoimmune disorders such as multiple sclerosis and rheumatoid arthritis arise when white blood cells of the immune system, which arise from the bone marrow, attack the body ' s own tissues
自體免疫疾病的產生,像是多發性硬化癥或風濕性關節炎,是因為源自骨髓的免疫系統的白血球攻擊了自己體內的組織。
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