Radioactivity came to light a century after the discovery of uranium when Henri Becquerel used uranium salts and photographic plates in the same experiment and found that one fogged the other.

放射性是鈾發(fā)現(xiàn)一百年之后才被貝克勒爾發(fā)現(xiàn)免费人成毛片在线视频，他在同一個(gè)試驗(yàn)中使用了鈾鹽和顯像版搜欧美性爱黄色网站，結(jié)果發(fā)現(xiàn)前者是后者變得模糊www.中文字幕在线播放。

Radioactivity came to light a century after the discovery of uranium when Henri Becquerel used uranium salts and photographic plates in the same experiment and found that one fogged the other .

在發(fā)現(xiàn)鈾一百年之后未满十八禁止18以下免费的AV，亨利·貝克勒爾在一實(shí)驗(yàn)中同時(shí)使用了鈾鹽和照相底片国内免费久久久久久久久久10，發(fā)現(xiàn)兩者會(huì)相互遮蓋黄色视频免费在线无码观看，從而使放射現(xiàn)象亮相于世。

In the International System of Units, the unit of radioactivity becquerel Harrell, called becquerels, symbol Bq, 1Bq equal to 1 second of radionuclides in the nucleus occurred within a decay, that decay 1Bq = 1 times / sec .

在國(guó)際單位制中亚洲日韩深夜福利高清，放射性活度的單位為貝可勒爾亚欧日本VA中文字幕久久，簡(jiǎn)稱貝可日本香蕉视频在线观看，符號(hào)為Bq，1Bq等于放射性核素在1秒鐘內(nèi)有1個(gè)原子核發(fā)生衰變日本欧美熟妇色一本在线视频，即1Bq=1次衰變/秒av网址国产。

You must be carful about the radioactivity material .

你們使用這些放射性物質(zhì)的時(shí)候一定要非常小心。

At 24 and 48 h after ［3H］tricyclopinate, both total and binding radioactivity were still seen in caudate putamen.

24和48 h日韩va精品，總放射性和結(jié)合放射性在腦的尾殼核仍有弱的影像顯示日韩三级片欧美A片。

Results: The radioactivity in organs in ANP group was higher than other groups'in experiment 1; In experiment 2, the results of cultures of chyle fluid, pancreas, lymph node from the experimental group were positive, whereas the results of cultures of all organs in ANP group were positive.

結(jié)果：實(shí)驗(yàn)一結(jié)果表明ANP組中各臟器的放射活性明顯高于其它組；實(shí)驗(yàn)二組中實(shí)驗(yàn)組乳糜液18岁禁看的黄片、胰腺sesesese、淋巴結(jié)細(xì)菌培養(yǎng)陽性，而ANP組中各臟器細(xì)菌培養(yǎng)均陽性国内自拍av偷500拍视频。

A kind of in-situ measurement method is introduced in this paper, by which the radioactivity in the clayey sand of ground surface contaminated by radioactive particulates can be investigated.

本文簡(jiǎn)要介紹一種對(duì)放射性微粒污染的地表砂土中放射性核素活度的就地測(cè)量方法91精品夜夜夜一区二区。

Synthetic vanillin is prepared from coal tar, which has no radioactivity.

合成的香蘭素是通過處理煤焦油而得來的，是沒有放射性的日韩十八禁视频。

It was quite a shock when 400 square metres of the site was found to be contaminated by radioactivity.

令人感到震驚的是亚洲天堂无码人妻在线影院，有400平方米的場(chǎng)地受到輻射污染。

This paper describes the principle and application of correlation method in the absolute radioactivity measurement .

本文介紹用于放射性核素活度絕對(duì)測(cè)量的相關(guān)方法的基本原理污污网址免费观看、應(yīng)用及其優(yōu)點(diǎn)黃色A级毛片永久免费。