Whether a particular size of ball is open or closed position, cables are available Butterfly Valves through tools, which must be recovered radioactive sources is very important.

特定尺寸的球無論處于打開還是關(guān)閉位置人人摸人人操人人插，電纜均可通過工具插逼吃奶头69黄色视频，這對放射源必須回收是很重要的精品163黄色录像。

Radioisotope means the nuclide in a certain element with radioactive decay, which has the same ordinal number of atoms but different mass.

放射性同位素国产毛片短激情视频，是指某種發(fā)生放射性衰變的元素中具有相同原子序數(shù)但質(zhì)量不同的核素。

A radioactive decay series; the paraffin alkane series.

放射性蛻變的系列日韩网络福利直播网站；鏈烷烴系列国产视频精品网。

But the translocation's speed of radioactive substance in phloem of two kinds of plants were similar.

但在木質(zhì)部內(nèi)的轉(zhuǎn)運(yùn)速度較在韌皮部內(nèi)快。

The results of experiments showed that the radioactive substance could be translocated in xylem and phloem of two kinds of plants.

花生和大豆的根和葉對甲基異柳磷都有一定的吸收能力呦呦网。

We summarize the study of geochemistry of the Co rich crust, and explain the diffusion of elements in the Co rich crust and the exchange with ambient seawater. Besides, we discuss the effect of phosphatization and substrate rocks on the composition of the Co rich crust. We also introduce the application of stable isotopes (including the stable isotopes of Pb, Nd, and Hf), radioactive...

概述了富鈷結(jié)殼地球化學(xué)的研究成果闡述了富鈷結(jié)殼中元素的擴(kuò)散及與周圍海水的交換日韩福利午夜免费无码AV，基巖和磷酸鹽化事件對富鈷結(jié)殼組成的影響分別介紹了穩(wěn)定同位素(Pb又黄又爽又色刺激的视频、Nd和Hf的穩(wěn)定同位素)、放射性同位素(Be免费黄色在线网站91、U和Th的放射性同位素)及元素(常量和微量元素欧美AAAA激情视频、稀土元素)在富鈷結(jié)殼古海洋學(xué)研究上的應(yīng)用。

By using radioactive ligand receptor binding assay and observing animal activities, this paper reports the effects of convulsants of picrotoxin, penicillin and kainic acid on the 3H GABA A binding in the cerebral cortex, hippocampus and cerebellum of mice.

采用放射配體受體結(jié)合分析法和動物行為觀察秋霞717电影，研究了致驚藥印防己毒素(picrotoxin 色综合同性人妖无码字幕，Pic)、青霉素(Penicillin 国内精品在线观看，PG)人人操人人摸人人干五月、紅藻氨酸(kainicacid ，KA)對小白鼠大腦皮層国产免费夜间在线观看AV、海馬国产成年人网站视频、小腦三腦區(qū)3 H GABA與GABAA 受體結(jié)合的影響。

Then she found that pitchblende was more radioactive than uranium by itself.

瑪麗注意到釷元素也是具有放射性的人人看人人上人人干。

In reality the proportion of the hypothetical element was far lower and it took several years to show unequivocally that pitchblende contains at least one highly-radioactive material which is a new element in the sense that chemistry attaches to the term.

實(shí)際上這種假設(shè)中的元素的濃度要小得多国产原创在线导航视频在线观看网站，我們花了幾年時間才明確無誤地證明瀝青鈾礦物質(zhì)中至少含有一種高放射性物質(zhì)，在化學(xué)意義上這就是一種新元素最近2019中文字幕大全。

We found that pitchblende contains at least two radioactive materials, one of which, accompanying bismuth, has been given the name polonium , while the other, paired with barium, has been called radium.

我們發(fā)現(xiàn)瀝青鈾礦物中至少含有兩種放射性物質(zhì)：與鉍伴生的命名為釙，與鋇伴生的命名為鐳污黄男男视频。