1) ladder-shape tooth
齿腰分阶
1.
At the same time,that the ladder-shape tooth on the double invo.
同时着重分析了分阶式双渐开线齿轮由于齿腰分阶对接触应力和弯曲应力的影响情况,为分阶式双渐开线齿轮这种新型传动应用于生产提供了理论依据。
2) the stress in tooth middle fillet
齿腰应力
3) segment double circular arc gear
分阶式双圆弧齿轮
1.
Pass to expati at e the characteristics of segment double circular arc gear,introducing the appl ication of segment double circular arc gear in turbine compressor,It presented that segment double circular arc gear in the high speed and large deeply turbi ne compressor was necessary.
通过阐述分阶式双圆弧齿轮传动特点,介绍了分阶式双圆弧齿轮在透平压缩机中的应用,说明在高速、大型透平压缩机中采用分阶式双圆弧齿轮是必要的。
2.
The article derived segment double circular arc gear end surface tooth form equation in detail and concisely,expressed all kinds of coordinates relationship by diagrams,and introduced how to draw the double circular arc gear end surface and how to simulate the mesh process.
详尽而又简明地推导了分阶式双圆弧齿轮的端面齿廓方程。
5) stepped labyrinth seal
台阶篦齿
1.
Experimental investigation of up stepped and down stepped labyrinth seals was made to study the effects of the pressure ratio of inlet and outlet and relative axial location of step and labyrinth on leakage characteristics at rotational and static states.
设计了上台阶和下台阶篦齿两组实验模型,研究了旋转和静止两种状态下篦齿进出口压比、篦齿与衬套轴向相对位置以及转速对封严特性的影响。
6) serrated step
锯齿台阶
1.
Analysis on the electromagnetic scattering characteristic of serrated steps;
锯齿台阶目标电磁散射特性研究
补充资料：二阶变分
二阶变分
second variation
二”套蕊穿黑磊票暴麟篇粼纂架的变分(variation of a ftmctional)，G狱eaux变分(伪teauxvariation))，推广了多元函数的二阶导数的概念.它用于变分法.按一般定义，定义在赋范空间X上泛函f(x)在点x。的二阶变分是 d2 占‘f(“。，”)一~方f(x。+亡h)}:二。·如果一阶变分是零，则二阶变分的非负性是f(x)在x〔、有局部极小值的必要条件，而严格正性 占’f(x。，h))“l}入}1’，“>o是充分条件(在一定的假设下). 在经典变分法的最简单(向量)问题中，在C’类向量函数类上考虑的具有固定边界值x(t。)=x。，x(r，)=义，的泛函 之.z(*)一J:(。，、，*)、:;::【。。，::，xR·xR一R、 ‘o的二阶变分有形式 仁. 。2，(、。，、)一丁(<，(:)、(。)，入(。)>+(·) r幻+2
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条