X-ray X射线

X射线，又叫X光，或音译为”爱克司光”，是德国物理学家伦琴(Wilhelm Konrad von Roentgen)发现的，因而也叫”伦琴射线”。

1895年的一天，伦琴正用一个真空管作气体导电实验，突然发现这种射线穿透了普通光不能透过的物体，这一发现使他十分吃惊。数年后一位好奇的朋友问这位教授:”你发现这种射线时，是怎么想的呢？””我什么也没想”，他回答说，”我在做实验”。这位物理学家命名字这种射线为X-strahlen，译成英文为X-ray，这里”X”的意思是说这种射线的性质尚未探明，还是一个未知数。

其他新闻

1. 2008年3月7日布什谈论经济原文及MP3资料

   
   Notice: Use of undefined constant ‘the_content’ - assumed '‘the_content’' in D:\wwwroot\cnuniwords\wwwroot\wp-content\themes\uniwords\single-translation-news.php on line 47
   PresidentBushDiscussesEconomy 　　THE PRESIDENT: Earlier today I spoke with members of my economic team. They updated me on the state of our economy. This morning we learned ...

2. 3月29日美国总统每周电台发言原文资料及现场MP3

   
   Notice: Use of undefined constant ‘the_content’ - assumed '‘the_content’' in D:\wwwroot\cnuniwords\wwwroot\wp-content\themes\uniwords\single-translation-news.php on line 47
   PresidentsRadioAddress 　　THE PRESIDENT: Good morning. Its not every day that Americans look forward to hearing from the Internal Revenue Service, bu...

3. 2008年3月13日布什精彩演讲原文及MP3资料

   
   Notice: Use of undefined constant ‘the_content’ - assumed '‘the_content’' in D:\wwwroot\cnuniwords\wwwroot\wp-content\themes\uniwords\single-translation-news.php on line 47
   PresidentBushDiscussesFISA 　　THE PRESIDENT: Last month House leaders declared that they needed 21 additional days to pass legislation giving our intelligence professionals ...

4. 4月3日布什出席北大西洋峰会讲话原文及MP3

   
   Notice: Use of undefined constant ‘the_content’ - assumed '‘the_content’' in D:\wwwroot\cnuniwords\wwwroot\wp-content\themes\uniwords\single-translation-news.php on line 47
   PresidentBushAttendsNorthAtlanticCouncilSummitMeeting 　　THE PRESIDENT: Mr. Secretary General, President Basescu, thank you all very much. For nearly six decades the NATO Alli...

5. 3月31日布什前往大西洋公约组织会议讲话及MP3

   
   Notice: Use of undefined constant ‘the_content’ - assumed '‘the_content’' in D:\wwwroot\cnuniwords\wwwroot\wp-content\themes\uniwords\single-translation-news.php on line 47
   PresidentBushDepartsforNATOSummit 　　THE PRESIDENT: Good morning. Laura and I are on our way to a very important NATO summit, and members of the United States Congress are o...

6. 2008年3月14日布什精彩演讲原文及MP3资料

   
   Notice: Use of undefined constant ‘the_content’ - assumed '‘the_content’' in D:\wwwroot\cnuniwords\wwwroot\wp-content\themes\uniwords\single-translation-news.php on line 47
   PresidentBushVisitstheEconomicClubofNewYork 　　THE PRESIDENT: Glenn, thanks for the kind introduction. Thanks for giving me a chance to speak to the Economic Club of New Yor...

7. 4月5日布什会见克罗地亚总统讲话原文及MP3

   
   Notice: Use of undefined constant ‘the_content’ - assumed '‘the_content’' in D:\wwwroot\cnuniwords\wwwroot\wp-content\themes\uniwords\single-translation-news.php on line 47
   <P class=0 style="LAYOUT-GRID-MODE: char"><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 12pt; COLOR: rgb(0,51,153); FONT-FAMILY: 'Arial'; mso-spacerun: 'yes...

8. 3月15日美国总统每周电台发言原文及现场MP3资料

   
   Notice: Use of undefined constant ‘the_content’ - assumed '‘the_content’' in D:\wwwroot\cnuniwords\wwwroot\wp-content\themes\uniwords\single-translation-news.php on line 47
   President'sRadioAddress 　　THE PRESIDENT: Good morning. On Friday, I traveled to New York City to talk about the state of our economy. This is a top...

9. 4月1日布什与乌克兰总统尤先科会谈原文及MP3

   
   Notice: Use of undefined constant ‘the_content’ - assumed '‘the_content’' in D:\wwwroot\cnuniwords\wwwroot\wp-content\themes\uniwords\single-translation-news.php on line 47
   PresidentBushParticipatesinJointPressAvailabilitywithPresidentViktorYushchenkoofUkraine 　　PRESIDENT YUSHCHENKO: (As translated.) Dear Mr. President, excellencies, ladies and ...

10. 4月5日美国总统每周电台发言讲话原文及MP3

    
    Notice: Use of undefined constant ‘the_content’ - assumed '‘the_content’' in D:\wwwroot\cnuniwords\wwwroot\wp-content\themes\uniwords\single-translation-news.php on line 47
    President'sRadioAddress 　　THE PRESIDENT: Good morning. I'm speaking to you from Europe, where I attended the NATO summit and witnessed the hopeful pr...