国家/地区 世界知识产权组织（2）
IPC部 C（2）
IPC大类 C21（2）
IPC小类 C21D（2）
IPC
发明人
公开年
申请年
专利权人

High-strength steel plate comprises base steel plate, and ferrite layer having internal oxide layer on which iron-nickel alloy layer is formed with excellent surface quality formed in internal oxide layer from surface of ferrite layer.

LEE K, LEE C, KANG K, KIM N, JANG Y, LEE J, KANG K C, KIMNAMAH, JANG Y M

Jet strengthening device comprises nozzle provided with hollow cavity and connected with mixing chamber, control device to control operation of first stirrer, second stirrer and lifting platform and nozzle connected with mixing chamber.

ZHANG X, ZHANG P, ZHANG C, TU S, ZENG F, GONG C, LIU Y, WANG Y