查询词典 observational

The five-year observational study included 1,558 cognitively normal African-Americans aged 65 and older.

5年的观测研究，包括1，558名认知正常非洲裔美国人， 65岁及以上。

DESIGN: We performed an observational cohort study.

设计：我们进行了一项观察性队列研究。

RESULTS: Combining randomized and observational cohorts, 113 patients with workers' compensation and 811 patients without were followed for 2 years.

结果：将随机试验和观察队列相结合，113例具有劳工补偿的患者和811例不具有劳工补偿的患者随访2年。

Based on the radar dense data of convectional cloud on June 12,2004 in Yongdeng county,choosing two similar convectional clouds as seeding and non-seeding cloud,the remarkable changes of radar echo parameters of the seeding cloud compared with the non-seeding cloud were discussed in this paper,and the rain enhancement effect was evaluated primarily with ground observational rainfall data.The results show that many aspects of the seeding cloud,such as precipitation,life characteristic and vertical characteri...

利用2004年6月12日甘肃省永登县雷达观测对流云的加密资料，选取了2次相似对流云过程分别作为目标云和对比云，探讨了目标云作业前后较对比云雷达回波有关参数的显著变化，并结合地面雨量点观测资料对地面人工增雨作业效果进行了初步分析，结果表明：目标云在降水、生命期特征、回波垂直特征参数变化方面，表现出作业前后较对比云存在明显差异，目标云作业40 m in后地面产生0.6 mm降水，而对比云则从新生发展到减弱消散阶段经历较短的时间(30 m in)，地面并无降水产生，从而推断本次人工增雨达到了一定的预计效果。

A mixture of observational and experimental methods are used in field sites ranging from Costa Rican tropical dry forest to Hawaiian swamps to Heathland in Great Britain.

该研究组运用综合的观测和试验方法在广泛的地点作业，从哥斯达黎加的热带旱林到夏威夷的沼泽再到英国欧石南丛生的荒野。

Geographical distribution characteristics of urban visibility in Anhui province are analyzed using routine observational data at 17 urban stations during the period from 1980 to 2005. The visibility trends in 5 cities from 1955 to 2005 have been analyzed using the methods of Ridit analysis cumulative percentiles and frequency of "very good" visibility.

利用安徽省17个地级市气象站1980-2005年的能见度观测资料，分析了安徽省城市大气能见度的地理分布特征，并用Ridit、累积百分率和"非常好"能见度出现频率分析法分别对5个代表性城市1955-2005年的大气能见度进行了研究和分析。

Dr. Currie, who also spoke at the meeting, summarized new data from an observational U.K.

会上， Currie 博士总结了英国一项观察性研究得出的最新数据。

First, there is an observational trend, represented by the Ionian physicists and Democritus, which proposed specific substances operating in our environment as the basis of life.

第一个是由爱奥尼亚物理学家和德谟克利特提出的观察倾向，它提出我们环境中存在的特别物质是生命的根本。

Research design informs the planning of experiments and observational studies to ensure that their results have

研究设计负责编制实验研究和观察研究的计划，确保其结果具有

Therefore, in view of utilizing the best information distilled from the observational data, the traditional method of solving differential equation, of course, is not perfect.

因此从充分利用预测数据中包含的信息来看，传统的求解微分方程预测未来的方法显然是有缺陷的。

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。