The microstructure and mechanical properties of welded joint of ultra-fine grained rebar were studied.
研究了超细晶粒钢筋焊接接头的组织和力学性能。
2
Objective: To observe the effect of heart deficiency syndrome on microstructure and ultra-microstructure of cardiac muscle cells.
目的：观察心虚证对心肌细胞微细结构及超微结构的影响。
3
Ultra fine microstructure could increase strength, toughness and work life for steel products, this is developing trend since middle of 90 th in last century of the world.