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According to the observation of the number concentration spectrum and the mass concentration of atmospheric aerosol, TSP and its particle size distribution,micrometeorology,and the solar spectroscopic radiation,even the neutron activation treatment of sand dust samples in Helan Mountainous area, the formation law of sandstrom, dust and sand blowing weather and the characteristics of climatic variation in this area and the influence of Helan Mountain are counted and analysed.

利用贺兰山地区沙尘暴历史资料和综合观测资料，对大气背景、浮尘、扬沙和沙尘暴发生期间的大气气溶胶数浓度谱、质量谱、大气总悬浮颗粒及粒径分布、微气象、分光日射观测以及沙尘样品进行中子活化处理，分析了该地区浮尘、扬沙和沙尘暴形成规律，气候变化特征和贺兰山的影响。

Therefore, the observation of Na layer is one of the important method to study the dynamical process in the mesopause region. In this paper, we combine a timedependent photochemical model, the International Reference Ionosphere model (IRI95) and a photochemical model of sodium to develop a time dependent sodium photochemical model.

本文建立了时变的中高层大气光化学模式，并与国际电离层模式(IRI95)与Na层光化学理论相结合，建立完整时变的中高层大气Na层光化学模式，着重研究Na层分布的昼夜变化。

From this observation, a constitutive model based on Gurson criterion and Pietruszczak criterion is proposed to study the mechanicals behaviour of chalk.

据此，一个基于Gurson准则和Pietruszczak准则的本构模型被提出用来描述其塑性力学特性。

Meteorologists have predicted that under the current observation, 2008 is very possible pandemic.

气象学家们根据目前的观测预言， 2008 年极有可能发生大流感。

It can be used in studying the calcium dynamics, in addition it\'s applicable for real-time, less damage and long-playing observation. It might be important to study calcium of spine with stimulations of neurotransmitter and action potential.

结果表明，利用Cameleon 的FRET 比值变化来定量监测树突棘钙动力学的方法是切实可行的，并可以进行实时、无损、长时间的监测，为研究神经递质、动作电位等刺激对树突棘内钙信号影响提供一种重要研究手段。

Or sense of distance from an observation point, such as linear perspective in painting.

距离从观察点看，对距离的测度或感觉

The measurement or sense of distance from an observation point, such as linear perspective in painting.

距离从观察点看，对距离的测度或感觉

In terms of code and phase observables and their observational equations, code multipath observation is derived and discussed.

其中伪距观测值中的多路径效应的分析又分为单频接收机和双频接收机两种情况进行了讨论；而相位观测值中的多路径效应的相关分析是利用相对定位的平差残差进行的。

Weighing about 3,200 kg at launch, it has payloads for communications, broadcasting and weather observation.

重约3200公斤，发射时，它有效载荷为通信，广播和气象观测。

This experiment selects material E14d SD the big mouse SVZ nerve stemcell as well as P7d the SD big mouse internal ear stem cell, does nothave the blood serum complete culture medium raise through D-MEM/F12to cause its massive multiplication, a part carries on Nestin, NF,CNP, GFAP, MAP-2, Myosin, the P27 immunity group, proved the raise thenerve stem cell has many to the split up ON potential; Another partdyes EGFP after the extension to carry on the guinea pig internal earto transplant, after two weeks fills the class to take the cochleafixed slice observation, discovered has the stem cell ball group inthe internal ear survival, proved the nerve stem cellheterotransplantation the possibility and for transplants the stemcell migration differentiation repair hair cell damage the thoroughresearch accumulation experiment experience.

本实验取材E14d SD大鼠SVZ神经干细胞以及P7d SD大鼠内耳干细胞，通过D-MEM/F12无血清完全培养基培养使其大量增殖，一部分进行Nestin、NF、CNP、GFAP、MAP-2、Myosin、P27免疫组化，证明培养的神经干细胞具有多向分化的潜能；另一部分通过转染EGFP后进行豚鼠内耳移植，两周后灌流取耳蜗固定切片观察，发现有干细胞球团在内耳存活，证明神经干细胞异体移植的可能性并为移植干细胞迁移分化修复毛细胞损伤的深入研究积累实验经验。

But this is impossible, as long as it is engaging in a market economy, there are risks in any operation.

但是，这是不可能的，只要是搞市场经济，是有风险的任何行动。

We're on the same wavelength.

我们是同道中人。