曲流

The interrelations of flow stress and strain rate can be described by a hyperbolic sine function for 7075z aluminum alloy during the process of high temperature deformation.

其高温塑性变形过程中的流变应力与应变速率之间可用双曲正弦函数来描述。

The flow stress increases with increasing the strain rate, and decreases with increasing the deforming temperature, which can be described by a constitutive equation in hyperbolic sine function with the hot deformation activation energy of 209.84 kJ/mol, and can also be described by a Zener-Hollomon parameter.

该合金热压缩变形的流变应力行为可用双曲正弦形式的本构方程来描述，也可用Zener-Hollomon参数来描述，其变形激活能为209.84 kJ/mol。

2Based on the nonparametric model and the hyperbolic tangent model dynamic response analysis matlab based programs on the damper-structure coupled system were carried out.

2分别采用双曲正切模型和神经网络模型编制了Matlab程序，对安装有磁流变阻尼器的结构系统进行了动力响应分析。

In this study, the following studies have been carried out(1)Test on a typical MR damper employed in this study was carried out, Neural network model based a direct model and a inverse model were established. The performance of the models were cpmpared with the Bingham model and the hyperbolic tangent model. Results show that ANN model can describe the mechanical behavior of MR damper perfectly as a nonparmetric model.

本文主要进行了以下三个方面的工作：(1)对一种典型的磁流变阻尼器进行了性能试验，利用实验实测数据建立了阻尼器的Bingham模型、双曲正切模型两种参数模型以及基于神经网络的正向和逆向模型，对三种计算模型进行了仿真分析，并与试验结果进行对比研究，结果表明，神经网络模型比两种参数模型能更好地模拟阻尼器的动态性能。

Key words: applied mathematics; hyperbolicity; hyperbolic conservation laws; multi-class traffic flow Lighthill-Whitham-Richards model; Riemann invariants

引用格 式：杨建伟，王可，王红利。多等级交通流LWR模型的双曲性和Riemann不变量。中国科技论文在线精品论文，2009，2(1)：25～32。

Spring, in the Miao Zhu Ziqing Biduan is a "Mountain Laurel up, the water rose up, the sun blushed up" and vitality; spring, Chi Pai-shih of the ink pen is a "silent stream flow, tadpole happy Tour "Happy accessibility; spring, is a poet in the Tang Dynasty,"春眠不觉晓 everywhere Wen Ti Niao; nights come and Feng Yusheng, Whispering Color "random singing, without exception, moved and inspired for the spring, for the spring song of books praise of spring, the spring of hope, right, right to retain the spring in the spring of feeling, people are so different from the same kind of feeling unusually Huaizhao same passion.

春天，在朱自清的妙笔端是一片"山朗润起来了，水涨起来了，太阳的脸红起来了"的勃勃生机；春天，在齐白石的墨笔下是一幅"溪水静静流、蝌蚪快活游"的快乐畅达；春天，在唐朝诗人中是一曲"春眠不觉晓，处处闻啼鸟；夜来风雨声，花落知多少"的随意吟唱，无不对春天感奋，对春天歌诵，对春天赞叹，对春天希冀，对春天挽留，于春天的感觉，人们是那样异于寻常地怀着同一种心情同一种激情。

Rounding out the contemporary flow are Cameo's old-school homage and first charting single,"Rigor Mortis," and Con Funk Shun's brass- and bass-infused "Ffun."

排在前当代流是浮雕的老派敬意和第一图表单曲"尸僵"和节能克顺的黄铜和低音注入"Ffun。"

It is necessary to set up a model for calculating steady state productivity of snaky wells.

考虑井筒流动和地层渗流的耦合作用，建立了蛇曲井的稳态产能计算模型，给出了模型的求解方法。

Driven by the combined action of the buoyancy and viscous force,oil drops with the vertical velocity lift rapidly and accumulate at the top of the separation space,which makes oil-water separation at last.

为改善油水分离的效果，利用泵吸产生的负压将含油污水吸入曲板组成的流道内，使油滴在曲面的导流作用下进入分离空间并获得向上的运动速度。

Culm sheaths orange, ca. 1/2 as long as internodes, leathery, densely dark brown strigose, base yellow-brown pubescent, outer margin dark brown ciliate, inner margin glabrous; auricles reflexed, suborbicular, large; oral setae in 1 row, radiate, to 2 cm; ligule obliquely arcuate or truncate, 2–3 mm, dark brown pubescent, margin lacerate and fimbriate with setae more than 1 cm; blade deciduous, reflexed, lanceolate, abaxially glabrous, adaxially densely yellow hirtellous toward base.

竿箨橙，叶耳反折，近圆形，大；在1 排的口头的刚毛，散发出，对2厘米；叶舌间接弧曲或截形，2-3毫米，深棕色短柔毛，和有刚毛1厘米的超出流苏状的边缘撕裂状；落叶，反折，披针形的叶片，背面无毛，向基部正面浓密黄具微糙硬毛。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。