About MATSUZAWA TOSHIO
About 日本化薬
About WADA YUJI
About TAMURA SHOZO
About YOSHIDA TADAO
About pressure vessel
About azobisisobutyronitrile
About Measuring methods and instruments of force,work load,pressure,friction
About Other disasters
About 圧力容器
About 試験
About 破裂板
About 破裂圧力