Through the analysis of elements affecting the rough crystalzone in pipeline steel weld, it raises the flexing direction of rough crystalzone of pipeline steel.
通过对管线钢焊接粗晶区韧性影响因素的分析，提出了管线钢粗晶区的韧化方向。
2
The metastable zone is narrowed, and the crystal growth rate is increased in the presence of calcium acetate as an impurity.
醋酸钙杂质的存在使木糖溶液介稳区变窄，晶体生长速率加快。
3
It is introduced a puller applied to purification of rare earth (RE) material, according to the float zone (FZ) technics of crystal growing, interprets main structure and characteristic of the puller.