查询词典 fluctuating

According to the characteristic of wind field on bridge main deck, WAWS is utilized to simulate the fluctuating wind velocity time history. By use of the explicit decomposition of the wind velocity spectrum density matrix and the FFT technique, the efficiency of simulation is improved greatly.

根据桥梁主梁处风场特点，利用谐波合成法模拟了主梁处的脉动风速时程，通过对脉动风速谱密度矩阵的显式分解和FFT技术的引入，极大的提高了模拟效率。

According to the characteristics of wind field on bridge, WAWS method is utilized to simulate the fluctuating wind velocity time history. Based on the quasi-steady aerodynamic forces theory, the expressions of the aerodynamic forces acted on per length of the whole bridge deck are introduced.

然后根据本桥梁所处风场特点，利用谐波合成法模拟了该桥梁上的脉动风速时程，基于准定常气动力理论，给出了作用在整个桥梁主梁单位长度上的气动力表达式，并对模拟的结果进行了检验。

The Vulcans might point to our wildly fluctuating unemployment rates and suggest that wages are still not absorbing enough of the strain of economic downturns.

瓦肯人可能会指着我们大幅波动的失业率，告诉我们工资水平仍未充分消化经济低迷带来的压力。

The statistical and fractal feature of fluctuating differential pressure for air water two phase flow in the upward section of U type tube was investigated in the present paper.

该文研究了U形管垂直上升段空气水两相流压差波动过程的统计和分形特征，着重分析了压差波动过程的均值、均方根、分维数随折算气速和液速的变化规律。

Tilapia are very tolerant of fluctuating water conditions, such as changes in pH, temperature, oxygen and dissolved solids.

罗非鱼是非常宽容的波动，如pH值，温度，氧气和水溶解固体的变化情况。

Furthermore, it is verified that the peak suctions are highly correlated with the conical vortices by coherence functions of fluctuating pressures.

通过综合一些典型大跨度平屋面结构的风洞试验结果，分析了这种结构风敏感方向的风压分布特征及其产生机理。

To reveal aft end internal flow feature of a solid rocket motor with submerged nozzle, a two dimension cold flow test model with rectangular channel was designed The cold gas simulation was based on geometric similarity and aerodynamic analogy Mean and fluctuating velocity field was measured using phase doppler particle analyzer It showed that the flow separates at upstream of the submerged nozzle and reattaches on the tip of the nozzle nose A relatively steady recirculation zone formed in...

为了揭示含潜入喷管的固体火箭发动机尾部流动特征，按照几何相近和气动相似原则设计了通道为矩形的二维冷流实验模型，利用相位多普勒粒子分析仪对燃烧室尾部气流的时均速度和湍流脉动速度进行了测量。实验结果表明气流在潜入喷管入口上游发生分离，再附点位于喷管前端部外侧，背壁空腔内形成一个较为稳定的回流区，流场的轴向和横向湍流强度都比较大

The main character of the HVS is that, by means of fluctuating oil pressure, the pile-driving force can be changed in a higher frequency, and therefore better vibrating effect can be gained.

液压振动系统的主要特点是在桩机液压系统中的压桩油路产生流体压力变化和波动，从而使沉桩力出现高频的周期变化，产生振动压桩的效果。

Migraine is more common in women than men, and this is linked to fluctuating levels of the hormone, oestrogen.

偏头痛是较为常见的在女性多于男性，这是联系在一起的波动水平的激素，雌激素。

Migraine is often worse in women, and is linked to fluctuating levels of the hormone, oestrogen.

偏头痛往往是更糟的在妇女，并是联系在一起的波动水平的激素，雌激素。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。