摘要:In aviation, a hard landing is an especially rapid or steep descent.Landing is the final phase in fli[阅读全文:]
摘要:Hot Briquetted Iron (HBI) is a premium steelmaking raw material that contains 91% to 94% total iron ([阅读全文:]
摘要:Handymax or Supramax is a naval architecture term for a bulk carrier, typically between 35,000 and 60[阅读全文:]
摘要:High speed steel (often abbreviated HSS, sometimes HS) is a material usually used in the manufacture[阅读全文:]
摘要:High-strength low-alloy steelHigh-strength low-alloy (HSLA) steel is a type of alloy steel that provi[阅读全文:]
摘要:Hematite, also spelled as hæmatite, is the mineral form of Iron(III) oxide (Fe2O3), one of seve[阅读全文:]
摘要:Heat treatment Heat treatment is a method used to alter the physical, and sometimes chemical, propert[阅读全文:]
摘要:Hot-dip galvanizingis a form of galvanization. It is the process of coating iron or steel with a thin[阅读全文:]
