自由叶片

某型蒸汽轮机自由叶片失速颤振研究

The Study of a Steam Turbine Free Blade Stall Flutter

自由叶片断裂事故分析及对振动强度安全准则的建议

Failure analysis of free blade and proposals to safety code of vibration strength

对650MW核电汽轮机自带围带叶片及自由叶片装配工艺过程进行详细论述。

This paper expounds the assembly of integral-shrouded blade and free standing blade for650MW nuclear turbine .

与自由叶片-轮盘相比，成组叶片-轮盘由于成组特性其振动特性更为复杂。

Compared with free standing blade disk , the vibration characteristics of grouped blade disk are more complex because of the group characteristics .

传统的长叶片扭转恢复计算是以自由叶片为模型的，它已不适合目前应用较广的整圈连接叶片结构。

The model of free blade , a traditional method , has been used in calculating the twist-back of long rotating blade . Now , it has already been unsuitable for the application of continuously coupled blade structure .

对数控加工自由曲面叶片刀具干涉问题进行分析，实现了平头端铣刀无干涉刀位轨迹的自动生成，利用动态仿真进行了刀位验证。

Based on the analysis of the cutter interference , which is the main problem in NC manufacturing for twisted blade , the flat end cutter track without interference is made automatically , and the dynamic simulation of the 5 axis NC manufacturing for blade process is also accomplished .

多效唑及6-BA对油橄榄氧自由基代谢和叶片脱落的影响

Influence of Paclobutrazol and 6 BA on metabolism of superoxide radical and leaf abscission in olive

同时叶片衰老时SOD活性的下降和膜脂过氧化作用均被延缓，据此探讨了BA作为自由基清除剂延缓叶片衰老的可能机理。

Meanwhile the decrease of superoxide dismutase activity and the increase of lipid peroxidation was also delayed . Thus , the possible mechanism of BA in preventing senescence as the scavenger of free radicals was discussed .

羟自由基对小麦叶片的氧化损伤及外源抗氧化剂的防护效应

Oxidative Damage of Hydroxyl Radical to Wheat Leaf and Protective Effect of Exogenous Antioxidants

SOD酶活性在两品种幼叶中较高，有利于消除自由基的伤害，老叶中较低，自由基对叶片的破坏能力大；

The activities of SOD in the young leaves were higher than that of the old leaves in varieties walnuts . It could remove the injure of free radicals for the young leaves , and could increase damage for the old leaves .