The weld metal showed very good toughness at low temperature, and dominant microstructure of acicular ferrite.结果表明:所研制焊丝的焊缝金属具有优良的低温韧性, 且实现了以得到针状铁素体组织为主的设计目标.Paris has played a dominant role in France, not just in politi...
Mozart was, all , not a mere purveyor of music but the supreme dramatic geniuses all time.莫扎特 毕竟 不仅是作曲家,而且是空前的最大戏剧天才之一....a purveyor of female undergarments...女式内衣供应商Silence , purveyor of gossip, do not spread that repor...