About TOMITA YOSHIHIRO
About cast iron
About mechanical property
About carbon
About nitrogen
About carburizing(metallurgy)
About biomass
About green tea
About coke
About gray cast iron
About tensile strength
About time dependence
About temperature dependence
About FC250
About Mechanical properties
About Various techniques for casting
About バイオコークス
About 加炭
About 鋳鉄
About 機械的性質
About 炭素
About 窒素