查询词典 vortex sheet

The measuring principle and application of vortex flowmeter are introduced.

文摘：介绍涡街流量计的测量原理及应用。

What you're most likely hearing is the vortex that's beginning to be shed by the forebody strakes.

你最有可能听到的是由前机身边条翼开始产生的涡流的声音。

The studies of forebody asymmetric vortex and its active control, which are suggested in the proposal to National Natural Science Foundation, have been completed, and the systematic and original research results have been obtained.

通过本项基金课题的研究已完成原申请书中提出的各项研究内容，取得了较为系统具有原创性的科研成果。

When a fighter aircraft or missile flies at high angle of attack, asymmetric vortex es are produced from the forebody and induce strong side force and yawing moment.

飞机或导弹在大迎角下飞行时会形成非对称涡，从而产生很大的侧滑力和偏航力矩。

The vortex discussion is knowledge, the core of management is person, the fundamentality is value of knowledge.

它们都是以"知识"为中心议题，以人的管理为核心，以"知识的价值"为根本。

The approach of calculating vortex-excited nonlinear vibration by Galerkin's method is proposed.

深水隔水套管的涡激振动是套管的疲劳断裂及可靠性评估的重要部分。

Upon that, electron and graviton form the vortex relation can on the polymer initial stage only, at this time ,degree of polymerization is smaller, leavings force ling are much..

总体上，所有粒子都受到引力的作用，任何一枚粒子，它向空间发出的引力线并非仅仅着用于一个对象，引力子对外，仅形成引力，斥力子对外既形成斥力也形成引力，质子、中子是"微回旋星系"，它们以"星系"为单位在原子内部回旋，原子外层电子的数量要比现在认为的多上亿倍，原子结构是由这些成员力的关系和能量不灭规律决定的。

In the first part, first, the operational principle of Varivec Propeller is explained. Secondly, the mathematical model for predicting longitudinal and transverse movement hydrodynamic characteristics of Varivec Propeller under steady or unsteady condition are present, based on the general propeller lifting-surface theory, potential flow theory and Green theorem. Thirdly, theoretical calculation methods for predicting hydrodynamic characteristics when the influence of paraboloidal boss on the performance of Varivec Propeller is or isn't considered are present, based on The finite basic solution method, the unsteady vortex lattice method and Hess-Smith method Different rake angle is adopted according to different desire in practical application.

在理论计算部分，本文首先给出了全方向推进器的工作原理，然后基于常规螺旋桨升力面理论、势流理论和格林定理建立了定常和非定常状态下全方向推进器纵向、横向运动的水动力性能计算的数学模型，并利用有限基本解法、非定常涡格法和Hess-smith方法分别对考虑和不考虑桨毂影响时的全方向推进器纵向、横向运动水动力性能进行了数值预报。

The test finished in plan cascade wind tunnel in GTE got the frequency spectra of vortex shedding in all kinds of work condition, and realized unsteady cooperative flow type by method of sound excitation.

在中国燃气涡轮研究院完成了全部叶栅吹风实验，获得了某种扩压叶栅叶片表面旋涡脱落频谱随来流工况变化的规律，并通过声激励的手段在国际上首次捕捉到了新一代"非定常耦合流型"。

He had been caught in a vortex and was being whirled on with a velocity of advance and gyration that made him giddy and sick.

他被漩涡卡住并以推进回旋的速度不停旋转，也因此让他感到晕眩想吐。

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。