查询词典 years

Based on analyzing the change of aqueous environment in the Shiyang River Basin since recent more than 2000 years, in this paper the change trend of water resources and its impacts on the environment in the drainage basin since recent 50 years are lucubrated.

在分析石羊河流域水环境近2000多年变化的基础上，重点探讨了近50年来水资源的变化趋势及对环境的影响。

When I was five years old, I began to draw. It has been nine years.

当我5岁的时候，我就开始画画了，到现在已经9年了。

More pictures, more years alive and come to China I dream to do a book about this huge country for so many years, all in black and white called "China" in reference to a Tori Amos song

在我的有生之年拍摄更多的照片还要去中国（我梦想着通过几十年为这个国家出一本书，一首Tori Amos歌里所有的黑白都被称之为中国

Looking back the last 20 years, especially the recent 10 years, the international dredging market has undergone profound changes.

中文摘要：回顾过去的20多年，特别是近10年来，国际疏浚市场发生了巨大变化。

We believe China over the next 10 years, and even a longer period of 30 years, the main driving force comes from the new driving wheel : New rural reform and the PRC model.

我们相信，在未来10年中国，甚至30年的车轮未来较长时期的主要动力来自在新的驱动轮：新农村改革与中华人民共和国的模式。

In the science and technology 7 years ago foamy evening, telecommunications is filled with prep above of Ceng Yuan of division share price 100 HK dollar, drop in this round in a few years of time before, telecommunications is filled with the share price of the division to be controlled in 5 HK dollar all the time.

在7年前科技股泡沫的末期，电讯盈科股价曾远高于100港元，在此轮下跌前的几年时间里，电讯盈科的股价一直在5港元左右。

Material and Methods:From March,2008 to January,2009,250 patients(146 Males and 104 Females,ranged from 18 to 82 years old,mean age was 48 years old) enrolled in the First Affiliated Hospital of Kunming Medical College were performed dual energy scan(Group A,200 patients) and Neuro-DSA scan(Group B,50 patients) using DSCT.The patients were randomly divided into Group A and Group B.Regarding to the justification of scan protocol,100 patients in Group A were selected as sub-group to explore the scan protocol.The image quality Was analyzed both in four categories(4.0/60、4.5/60、4.0/70、4.5/70) of flow rate and total amount of contrast-enhanced material and in three categories(100—150HU、150—200HU、200-250HU) of CT value of left common carotid artery.The comparison of two scan approach was based on image quality,radiation does, postprocessing methods,time of scanning and subtraction and data storage amount.To validate the diagnostic capability of DE-CTA virtual unenhanced images,100 patients in Group A were undergoing head scan both in routine non-contrast program and DE-CTA virtual unenhanced program.Mean CT values,signal-to-noise ratio,image quality,sensitivity of lesion identification,and radiation does were applied to comparison.According to diagnostic results of dual energy of cerebral arterial angiography,62 patients out of 200 patients in Group A were confirmed with cerebral vessel lesions,the results were complied with DSA findings(the time between the two methods were within 1 week).

材料与方法收集2008年3月到2009年1月间在昆明医学院第一附属医院行DSCT CTA检查者250例(男性146例，女性104例，年龄范围18-82岁，平均48岁)，随机分为A、B两组，A组200例行双能量头颅CTA扫描；B组50例行Neuro-DSA扫描。A组前100例按对比剂不同流率和总量分为4组(4.0/60、4.5/60、4.0/70、4.5/70)对图像质量比较；按触发时左颈总动脉内平均CT位分3组(100—150HU、150—200HU、200-250HU)，比较图像质量的差异；对A、B两组血管图像质量、辐射剂量、后处理的方法、扫描和后处理时间及数据的容量进行比较分析；A组中前100例行常规与DE-CTA虚拟平扫的平均CT值、信号噪声比、图像质量、病灶显示情况、辐射剂量的比较分析；A组中行DSA检查62例(两种方法间隔时间均1周内)，比较两种检查方法诊断结果是否符合，并对其中24例动脉瘤行动脉瘤部位、数目、形态、瘤颈显示程度、瘤颈大小及瘤体长径和短径的比较研究。

Years has passed , Lee was set free, he was about 50 years old, emaciated old and dull-witted.

15年后被放出的李老俵，已经是年近50。

Mr Zhang of 36 years old, because of duodenum ball ministry ulcer became an operation 5 years ago.

36岁的张先生，五年前因十二指肠球部溃疡做了手术。

The durance of 4 years, and hunger of years, and the Cap of Right Wing left after left the penal farm, had destroyed any other ideals of mine.

四年的禁锢，四年的饥饿，处分解除后依然戴在头上的"右派"帽子，已经把我任何别的志向都摧毁了

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。