The different dilatometric cures of continuous cooling Transformation have determined by Gleeble-1500 thermal mechanical simulate,and combined metallographic analysis-hardness measurement and differential thermal analysis the CCT diagram is obtained.
在Gleeble-1500热模拟机上测定了16MnR钢在不同冷却速度下连续冷却时的膨胀曲线,结合金相-硬度法、示差热分析法获得了该钢的连续冷却转变曲线(CCT曲线);研究了16MnR钢连续冷却过程中奥氏体转变过程及转变产物的组织形态,比较了其与同类转变曲线的差别。
Mulberry red pigment is abstracted from mulberry juice by using macroporous resin and the anthocyanin content in the product is determined by pH-Differential spectrophotometry,we conclude that the anthocyanin content in the mulberry juice is 0.
用大孔吸附树脂对桑椹原汁中的桑椹红色素进行了提取,用pH示差法对产品中的花青素进行测定,测得桑椹原汁中的花青素含量为0。
Under 400 nm wavelength, P\-2O\-5 content can be determined by differential spectrophotometer in 50～55 minutes.
鉴于正磷酸根在酸性介质中与钼酸盐及偏钒酸盐生成稳定的黄色化合物,在400nm波长下,利用示差法测定P2O5仅需50～55min。