查询词典 observational

The effects of friction in surface layer on the structure of front and the frontogenesis in boundary layer, the interaction of orographic disturbance with front, the influence of diabatic process and moist process on the frontogenesis are investigated. Second, the occurrence and development of frontal rainbands have been studied extensively through the observational and theoretical approaches near half-century. However, there are still some problems needing further investigations because of the complication of the precipitation process.

关于锋面降水的产生和分布问题，近半个世纪以来，国内外气象学家进行了大量的观测和理论研究，但是由于问题的复杂性，至今仍有许多问题不清楚，我们利用非静力模式对变形场锋生条件下锋面雨带的发生、发展和演变过程进行了数值模拟和分析。

This doctoral dissertation is composed of several parts: At beginning, the frontal structure, the effects of diabatic heating and orography, the dynamics of frontal circulation and the mesoscale systems associated with front are reviewed. Several problems based on the review are brought forward. First, at present, the semigeostrophic frontogenesis theory is the most appropriate basic framework for the general explanation of the frontogenetic process. However, the comparison between semigeostrophic theory and the observation have revealed some inconsistencies. The newly observational facts increase the inconsistencies.

本博士论文主要由如下几部分组成，首先对锋面结构、地形和非绝热加热对锋的影响、锋生环流及锋面附近中尺度系统动力学问题的历史与现状进行了综述，在此基础上提出需要进行研究的若干问题：(1)、半地转锋生理论直到今天仍是解释锋生过程的最合适的理论框架，但是通过与观测事实比较，人们发现半地转理论不能对许多锋面观测特征给出令人满意的回答，新的观测事实使问题更加突出，这就向人们提出：是什么原因导致半地转理论与实际观测的不符？

By using the continuous observational data of air,radiation and soil from two sites of automatic weather station at Gaize and Shiquanhe on the western Qinghai-Tibet Plateau in the period from October 1997 to November 1998,the diurnal variations of surface albedo in summer and winter are analyzed.

根据1997年10月至1998年11月青藏高原西部改则和狮泉河两个自动气象站连续观测的大气、辐射和土壤资料，在分析高原西部地面反射率冬、夏季日变化特征的基础上，重点研究了地面反射率与土壤和大气若干重要因子(如土壤湿度、土壤温度、空气相对湿度、空气温度)的关系。

Data comparison shows a significant correlation between the TOR and surface ozone data collected at the GAW Lin 誥 n regional background station in the Yangtze Delta region, suggesting that the observational data have regional representativeness.

结果表明，长江三角洲地区对流层 O3柱含量的季节变化与该地区的临安区域大气本底站的地面 O3季节变化有着显著的相关关系，临安站的观测数据具有区域代表性。

Don't get out of the observational habit.

请别抛弃监视性观察习惯。

Methods: We conducted a prospective, observational study to assess the effect of surgery on emergency brake response time in a group of twenty-eight patients undergoing a unilateral first metatarsal osteotomy on the right side for symptomatic hallux valgus.

我们进行了一项前瞻性，观测研究，在一组28例右侧的症状外翻的病人行单侧第一跖骨截骨术来评估手术对紧急制动反应时间的效果。

However, the sparsity of the observational points used in the refraction method due to the restrictions imposed by the surface hypsography of the area-- one point per kilometre-- makes it possible only to give relatively accurate data for base rock velocities, but not for morphologic structure configurations.

但是，小折射方法受地表的地形起伏因素影响比较大，且观测密度也不够，每公里只有一个点，所以在该区只能较准确地给出基岩的速度信息，而无法准确地获得基岩的形态起伏数据。

However, owing to the much restricted hypsography of the surface for the refraction method and the insufficient surveying points --only one observational point a kilometre, we can only provide relatively true velocities of the base rock, but cannot obtain the accurate data of the morphologic-structural configuration.

但是，小折射方法受地表的地形起伏因素影响比较大，且观测密度也不够，每公里只有一个点，所以在该区只能较准确地给出基岩的速度信息，而无法准确地获得基岩的形态起伏数据。

We discussed the convergence of MAP path, i.e. in the condition of global optimization, we researched into the convergence of hidden state sequence when observational state sequence is infinite.

讨论了MAP路径估计的收敛性，即在全局最优的条件下考察了当观测序列趋于无限时隐状态序列的收敛性问题。

In order to make good use of the historical observational data,this paper suggests that the forecasting problem should be regarded as an inverse problem rather than an initial value problem.

进一步论证了数值模式的误差信息，也或多或少的隐藏在过去的历史数据中，为了充分使用过去的观测数据，本文建议改变问题的提法，不提成初值问题，提成反问题。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。