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It was first used more than 60 years ago by Britain to identify friend and foe aircraft in World War II. For more than 20 years, every railroad car in North America and many other countries have had RFID tags on them.

事实是，早在60多年前二战时，它就被英国用于识别自家和敌军的飞机。20多年前，北美和许多其他国家的每一辆电车上都已经有了RFID标签了。

The average age of the patients was 44.2 years (range from 7 to 71 years).

其中男98例，女66例；年龄7～71岁，平均44.2岁。

The age ranged from 18 to 63 years, mean 36 years.

年龄18~63岁，平均36岁。

Their ages ranged from 18 years old to 45 years old.

他们的年龄介于18岁到45岁之间。

Methods Fifteen patients ranged in age from 43 to 75 years with a mean of 59 years.

有症状SSS患者15例，全部为男性，平均年龄59岁（43 ～ 75岁）。

The patients ranged in age from 14 to 23 years （mean 18 years）.

其中男性7例，女性4例，年龄14～23岁，平均18岁。

The average age of patients was 37 years, ranging 21-67 years.

患者年龄21~67岁，平均37岁。

Ranging from 5 years to 50 years.

范围从5年到50 年。

Cardiac surgery in recent years a rapid development of science, some medical workers currently not in time to catch up with this new trend, so do not know much about the current level of cardiac surgery, some patients do not know when to be in a small treatment For example, ventricular septal defect, atrial septal defect. 10 years ago, such as textbooks that children speaking a bit more, to 5-year-old children re-treatment at the time.

心脏外科是近年来发展较快的一门学科，目前国内有些医务工作者没有及时跟得上这个发展趋势，所以不太了解心脏外科现在的水平，不太知道有些病必须在小的时候治疗，比如心室间隔缺损、房间隔缺损。10年前的教科书上讲的是等孩子大一点，到孩子5岁的时候再治疗。

Project Circumstance: Economic Benefit: This project construction period 3 years, after the project completes, business income 20,000,000 US dollars per year, profits and taxes 4,000,000 US dollars per year, investment recoupment period 3.5 years

经济效效益分析：该项目建设期3年，项目建成后，年营业收入2000万美元，年利税400万美元，投资回收期3.5年。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。