6.高强度低合金钢 high strength low alloy steels(LA) 在低碳钢或超低碳钢中,通过单一或复合添加铌,钛,钒等微合金元素,形成碳氮化合物粒子析出进行强化,同时,通过微合金元素的细化晶粒作用,以获得较高的强度。 7.双相钢 dual phase steels(DP) 钢的显微组织主要为铁素体和马氏体,马氏体组织以岛状弥散分布...
The common tube-building polychaeteLanice conchilegais known as a habitat structuring species and can form dense aggregations. The effects ofL. conchilegaon the surrounding benthic community have received little attention, especially in subtidal areas. Therefore, the presence ofL. conchilegain different...
飞亚达风致系列情侣对表——GA801008.WLW / LA801008.WLW 飞亚达风致系列主打简约主义精品腕表,致敬昂然出列,从容自若的年轻菁英。时分针光砂双面打磨,考究的腕部贴合舒适度,至今已成为系列标志,以不断追求精致的细节品质,焕发时计魅力。
The sigma tau value for the 4.3-m transition is ~4000 times larger in the Ga:La:S glass than in a dysprosium-doped LiYF4 crystal, which has lased on this transition. The large sigma tau value and the recently reported ability of Ga:La:S glass to be fabricated into fiber form show ...