分析了弯扭叶片中,叶片力的径向分力对沿叶高反动度的影响,及对变工况时脱流特性的影响。
This paper is intended to analyse how the radial component force which opposed on the bending blades affect the reaction along blade and flow separation characteristics of varying duty.
通过理论分析提出一种考虑叶片端部间隙影响的叶片力亏损模型,并对三种轴流压气机叶栅的端壁边界层及叶片力亏损进行了数值计算。
A new model is presented for calculating the end-wall boundary layer and its blade force defect inside the axial compressor cascade, based on theoretical analysis.
美丽的黄色山杨为白雪覆盖。然而整个的视野是极为美好的,我决定拍摄这张注意力集中在黄色叶片上的照片。
Beautiful yellow aspens amidst snow-covered pines. Although the entire view was stunning, I decided to crop the photo a bit to focus more on the yellow foliage.
改变叶片的每年一次的冬季储存大约是所有注意力就需要例行的基础上。
Changing the blade once a year and winter storage is about all the attention needed on a routine basis.
飞行中的飞机以外的悬停控制叶片被用来创造一个倾斜力向量机在希望的方向就像直升机旋翼。
To fly the aircraft in anything other than a hover the control vanes are used to create a force vector to tilt the machine in the desired direction much like a Helicopter rotor.
且在长期运行中情况比较稳定,采用该型式叶轮的泵轴向力较小,且可以在前后盖板上设置副叶片。
And the situation in the long-term stable operation, use the type of impeller shaft to the edge of the smaller, and can be set up before and after the Vice-leaf cover.
抗寒力的提高与叶片总水含量关系不密切。
Leaf total water content was not observed to be closely related with cold resistance.
研究了在稳定运行工况时影响汽轮机叶片激振力的主要因素。
Fourier harmonic analysis is applied to analyze the factors that affect steam turbine blade excitation.
在土壤质地相同条件下,高蒸发力下生长的植株比低蒸发力下生长的植株产生更多的吸收根、形成更高的单位叶片导水度。
Under the same soil textures, the plants at a high evaporativity formed more absorbing roots and a much higher leaf-specific water conductance than those at a low evaporativity.
此外上游静子尾迹以及动叶尾缘出口膨胀波等也是产生转子叶片表面非定常力的因素。
In addition, the wake interaction of upstream blade row and the expansion wave at rotor exit also cause an unsteady force acting on the downstream rotor blade surface.
该方法能够方便地计算接触面非线性摩擦力,考虑响应的高次谐波以及叶片高阶振型的影响。
This method can calculate the nonlinear friction force conveniently and can consider the effects of the blade high modes and the high harmonics of the blade responses.
本文利用光镜技术和MK-3型自动气孔计对松茶间作和单作茶园茶树叶片的解剖构造和气孔传导力进行了比较研究。
In this paper, stomatal conductance of leaves and anatomical structure of leaf surface in a pine-tea interplantation and a pure tea plantation are studied using MK-3 Antomatical Porometer.
与线性动力系统不同,阻尼叶片的频率不再是它的固有特性,其频率受外界激振力的影响。
The damped blades is a nonlinear dynamic system, so its natural frequency can be influenced by external force.
轴向力由副叶片或平衡孔平衡,对于径向力在的规格采取了双壳体设计;
Axial force is balanced by back vane or balanceable hole, for the specification with big radial force; we adopt double-wear passage design.
通过离体叶片致病力鉴定发现,各菌株间致病力差异显著。
Pathogenicity identification analysis from leaves in vitro indicated that the pathogenicity among the strains was significantly different.
干旱使叶片细胞束缚水含量增加,抗旱力强的品种(种)较抗旱力弱的含量高。
Cellular bound water content was increased and higher content of cellular bound water was found in drought - resistant varieties (species).
单作用叶片泵径向不平衡力是影响其工作压力提高的主要问题。
The imbalance of the radial force of the single action vane pump is a main problem which affects the enhancement of the working pressure.
叶片元素理论的方法与动量原理的方法相反,因为它关注的是由流体运动导致叶片产生的力。
The approach of blade-element theory is opposite that of momentum theory since it is concerned with the forces produced by the blades as a result of the motion of the fluid.
你瞧,那锯齿形的叶片,绿油油的,给人一种朝气蓬勃之感,又使人感到有一股充满活力的生命力在心中涌动,丝毫感受不到严冬的寒冷。
You see, it jagged leaves, green, and gives people a sense of vigor and vitality, but also the impression that the existence of a vibrant vitality surging in mind, does not feel the cold winter.
不对称静子叶片分布非谐设计下,转子所受到的激振力由静子叶片均布情况下的单频率高幅值激振力转变为多频率成分低幅值激振力。
To reduce the dynamic stress of rotor blades under the wake of front stator vane, an asymmetry stator mistuned design was conducted.
结果表明:玉米小斑病菌C小种可采用PDA培养基与寄主叶片连续共培养的方法提高产孢量和致病力;
The results showed that Bipolaris maydis race C might improve spores production and pathogenicity by culturing on PDA medium with fresh leaves constantly;
不对称叶栅非谐设计虽然会引起与转速同频的较大幅值激振力成分,但从整体考虑可有效降低叶片振动应力。
Though asymmetry stator mistuned may result in bigger amplitude aerodynamic force with the same frequency as rotational speed, it could reduce effectively the aerodynamic force of blade as a whole.
根据数值模拟结果,研究了不同锻造工艺参数(变形温度、变形速率、压下量等)对叶片锻造过程中的变形力、应力和应变变化的影响规律。
According to the simulation results, we studied the effect of the process parameters, including the deformation temperature, initial strain rate and stroke, on the load, equivalent st...
经过实验验证得出:普通铣削的切削力、冲击过大不能用于水轮机叶片坑内修复,但可以进一步研究高速铣削的应用可行性。
Based on the experiment it got the following conclusions: Normal milling can not be applied to turbine blase on site maintaining for its too strong forces and wallop.
磨头结构中包含的磨削力控制装置,可实现叶片砂带恒力磨削,解决了砂带磨削高精度控制的难题。
The grinding pressure control device of the machine can make the grinding pressure invariably. Therefore, the difficult problem of high-precision control for belt grinding can be solved.
轴向力由副叶片或平衡孔平衡,对于径向力大的规格采取了双壳体设计。
Axial force is balanced by auxiliary vanes or balance hole, for big axial force specs adopt double-case design.
轴向力由副叶片或平衡孔平衡,对于径向力大的规格采取了双壳体设计。
Axial force is balanced by auxiliary vanes or balance hole, for big axial force specs adopt double-case design.
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