查询词典 subtraction

Medical technicians equipped with the world's most advanced Siemens of Germany double-helical CT, Digital Subtraction Angiography machine, gastrointestinal multifunction digital machine, color ultrasound Aluoka Japan, the United States anesthesia machine and ventilator, automatic biochemical analyzer, and other large advanced equipment.

医技配备了目前世界上最先进的德国西门子双层螺旋CT、数字减影心血管造影机、多功能数字胃肠机、日本阿洛卡彩色超声、美国麻醉机和呼吸机、全自动生化仪等大型先进设备。

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。

First ,computers have circuits for performing arithmetic operations, such as:addition, subtraction,division,multiplication and exponentiation.

第一，计算机具有进行加、减、乘、除及取幂等各种算术运算的电路。

However, most computers have circuits for performing arithmetic operations, such as: addition, subtraction, division, multiplication and exponentiation.

电脑有许多显著的功能，然而，许多电脑都有用来进行算术运算的电路，如加、减、乘、除、求幂。

Spectral subtraction for speech signal processing is a classic method for decreasing noise which easily leads to error by regard fixed silence fragment as noise sample.

语音信号处理中减谱法是一种传统的降噪方法，但减谱法利用固定的无音片段作为噪声样本容易产生误差。

Math flashcard software created to improve speed and accuracy in the areas of addition , subtraction , multiplication , and division .

数学闪卡软件创建，以改善的速度和准确性方面此外，减，乘，并记名表决。

The fringe pattern generated by our method is of high contrast and has better quality than subtraction fringe.

我们在实验获得的变形前和变形后的散斑图上进行了实验验证，实验结果展示了新方法的性能。

Experiment include the operation of a half adder, full adder, plus / subtraction device, and the use of logic diagram VHDl descripti...

实验课的作业，包括半加器、全加器、加/减法器，使用逻辑图和VHDl描述，包括分析和报告。

Arthralgia syndrome and rheumatoid arthritis that is the disease, its course is often migration, recurrent, long Buyu; I used to fumigate addition and subtraction, can be a significant effect.

痹症亦即风湿和类风湿疾病，其病程往往迁移、反复发作、经久不愈；用一号方加减熏蒸，可收显著效果。

What French mathematician built and sold the first gear-driven mechanical machine that did addition and subtraction?

全句译：什麼是法国数学家建造并销售的第一部能做加法和减法的机械齿轮驱动装置？

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。