平均地

Numerical simulations by assemblies of circular panicles can qualitatively reflect the general characteristics of liquefaction behavior of sand. The interval effect of aspect ratio of elliptical panicle on the mechanical behavior of numerical sample is obtained, and the reason is related to the initial average co-ordination number. The regularity of evolution of fabric in the process of sand liquefaction under cyclic loading can be qualitatively achieved by using the numerical sample randomly mixed of panicles with different shapes. Numerical simulations can not only demonstrate the macro phenomenon of particle breakage, mostly importantly, it can also expose the evolution of particle breakage microscopically, and would contribute to further research of the micromechanics of particle breakage.

研究结果表明：Hertz-Mindlin非线性接触模型适用于变围压条件下砂土力学性质模拟；纯圆颗粒模拟能够定性地反映饱和砂土振动液化的一般规律；颗粒长短比变化对砂土力学性质的影响具有区间效应，其原因与粒间初始平均接触数有关；不同形状随机混合试样能够从定性规律上反映振动液化过程中砂土的细观组构演化规律；数值模拟不仅可得到颗粒破碎宏观响应，而且可以分析内部接触力变化和实现对粘结破裂位置的追踪，从而可进一步研究颗粒破碎细观力学机制。

Using feedback weight adjusts timely the step during iterating procedure, fastens convergence rate of frequency adaptive filtering. Similarly this method can also achieve the purpose of suppressing interference and improving the performance of DSSS system.

其优点是利用权值反馈不仅在权值迭代过程中实时调整更新步长，实现算法的快速收敛，同时达到有效地抑制多个强干扰的目的，使输出信号的平均功率更接近于扩频信号功率，改善了DSSS系统的性能。

The root inducation rate is 100% on the cotton, pearl rock and agar medium, but the number of root induced is maximum. The average number is 5.47. The young root possess many multistage branchs. The transplant effect also showed pearl rock is ideal substitute for agar.

珍珠岩、琼脂和脱脂棉的生根率都达到100％，生根数以珍珠岩最高，平均5.47条，幼根具多级分枝，试管苗移栽也表明，珍珠岩在地灵试管生根中是琼脂的理想替代物。

The average linewidth enhancement factor and the component effective linewidth enhancement factor are introduced for the performance analysis of interferometer all optical switches based on cross phase modulation of SOAs.

二、合理地选择和设定全光开关的性能参量是评价全光开关在OTDM解复用子系统中解复用性能的首要任务，本文选择全光开关中SOA平均线宽增强因子和器件有效线宽增强因子分析了基于SOA相位调制效应的干涉仪全光开关的性能。

The crown surface area was decreased with stand density and the relationship between crown volume and stand density was not significant.

林分树冠表面积和树冠体积预估模型的检验结果表明，两个模型的平均相对误差都在 8％之内，预估精度均大于91％，说明所建模型可以很好地预估樟子松人工林不同林分条件下的林木树冠表面积和树冠体积。

The supernatant fluid in culture was used to measure the levels of TNF-α, IL-1β, IL-6 by radioimmunoassay, and activation of NF-κB in PBMCs were measured by immunohistochemical method.

结果 不同剂量卡维地洛对CHF患者IL-1β、IL-6和TNF-α的水平均有抑制作用。

From 1973 to present, 8 satellites with 9 altimeters are launched, and many millions of altimetry measurements have been gathered and many characteristics of the sea surface have been investigated in these missions.

本文研究的主要目的和内容是系统地总结卫星测高技术的发展历史、应用及前景；制定测高数据的编辑准则和改善各种地球物理改正的精度；研究区域交叉点平差方法以进一步提高 Geosat 、 ERS-1和 ERS-2的径向轨道精度；完善由多种测高数据建立全球平均海面高模型的理论与方法，进而建立全球海面高模型；总结并研究利用测高数据恢复海洋重力场和分离海面地形的方法，确定中国海域的重力场；探讨海陆大地水准面拼接的问题，实现中国海陆大地水准面的拼接。

The algorithm is robust to clock asynchrony of nodes in different clusters, hence it is applicable to large-scale sensor networks, for which precise time synchronization is very hard.

仿真实验表明，提出的这种算法能使各个组内的传感器节点较为均匀地分布在目标区域，获得的平均覆盖率接近于上界值。

Shek Po district average altitude 1450 m, high mountains, is the fox, Qingyang, chukars, Paozi, Eagle, and other wild animals live on the land.

石拐区平均海拨1450米，崇山峻岭，是狐狸、青羊、石鸡、狍子、山鹰等野生动物的生息之地。

The results achieved by the unsteady simulation on the basis of Reynolds averaged Navier-Stokes are fitted to the experiential wind profile well. The results indicate that the numerical simulation based on CFD provides a new solution to study the downburst wind characteristics under the current conditions without detailed full scale data.

数值结果表明，基于雷诺平均的Navier-Stokes方程进行的非定常数值模拟结果同根据实测数据提出的三种经验风剖面吻合良好，在目前实测资料稀少的情况下，有助于更好地研究下击暴流风的基本特征。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。