The most common isotope of oxygen, for example, has an atomic weight of 16, but there are also rarer isotopes with weights of 17 and 18, caused by additional neutrons in their nuclei.

例如很常見的同位素氧人人干人人爽人人操人人，原子重量是16，但是還有更為稀少的重量為17和18的同位素，這是因?yàn)樗鼈兊脑雍酥杏蓄~外的中子。

Atoms of the same element that differ in their atomic weight are called isotopes.

具有不同原子量的同一種元素被稱為同位素国产成人中文激情小说在线观看网站。

Through improved marksmanship atomic weight of the volume has significantly reduced.

經(jīng)過(guò)改進(jìn)，槍法原子彈的體積重量已有顯著縮小性爱噜噜。

Iron comes betwee manganese and cobalt it in atomic weight.

鐵的原子量在錳與鉆之間玖玖玖在线视频免费播放。

This agreement shows that the method is available to complete the determination of atomic weight.

原子量測(cè)定結(jié)果的重合，說(shuō)明 MC一ICP/MS絕對(duì)測(cè)量法同樣可以完成原子量的測(cè)定wwwcom黄色网站在线观看。

In determination of atomic weight and isotope certified reference materials preparation, isotopic abundance almost is determined by this method.

在原子量的精確測(cè)量和同位素標(biāo)準(zhǔn)物質(zhì)的研制工作中亚洲黄色片免费看，一般采用此方法對(duì)元素同位素豐度進(jìn)行定值，測(cè)量?jī)x器多采用表面熱電離質(zhì)譜計(jì)国产色色色视频。

With hydroponic culture, we studied the effects of Zn(superscript 2+) on dry matter and zinc accumulation in wheat seedlings using Chang 5864 as the experimental material. In this paper, Zn(superscript 2+) concentration in cultivating solution was 30 and 60 mgL^(-1), respectively, and 0 mgL^(-1) Zn was set as control. Seedling root and plumule were gathered every day from 4 d to 13 d after cultivation. We measured dry matter weight, and analyzed zinc concentration by atomic absorption spectrometry. The results showed that the dry matter accumulation in seedling root and plumule were all significantly improved under Zn treatment.

為了探明Zn在小麥植株中的吸收色色社区五月、分配和積累規(guī)律，以小麥品種長(zhǎng)5864為供試材料无码A片黄在线观看网址，來(lái)用室內(nèi)水培方法，于培養(yǎng)4~13d后取幼芽和幼根91手机最新国精品自产拍不卡，用原子吸收分光光度計(jì)法測(cè)定樣品中Zn的含量看A片地址，研究了不同Zn(上標(biāo) 2+)供應(yīng)水平（0、301024手机看电影一区乳、60mgL^(-1)99riav首页，分別用Zn0、Zn30国产福利AV在线导航、Zn60表示）對(duì)小麥幼苗干物質(zhì)積累及幼苗Zn含量和積累的影響亚洲熟妇色XXXXX欧美，分析了小麥幼苗中Zn的積累規(guī)律亚洲综合在线五月婷婷。

The thymuses, spleens, sera and anticoagulant blood were collected after the rats were killed, to carry out these works:(1) Zinc concentrations were analyzed by atomic absorption spectrophotometry;(2) Body weight and the weight of thymuses and spleens were measured, the organ index were calculated;(3) Changes in pathology of thymus and spleen were observed;(4) Using TUNEL (terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling) method, the apoptosis of thmocytes and spleen lymphocytes was checked;(5) The expression of bcl-2、bax mRNA in thymus and spleen were detected by RT-PCR (reverse transcription polymerase chain reaction);(6) The expression of p56〓, a signal transduction protein in thymus and spleen were detected by immunohistochemistry;(7) Two-color cytofluorometric analysis was used to assess the expression of CD4, CD8, CD45RA and CD45RC in peripheral blood lymphocytes.

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The first Chinese atomic device, which had been tested the month before on October 16, had a yield of 22 kilotons and weighed 1,550 kg, far too heavy for the DF-2A (when the 200 kg reentry vehicle aeroshell had been added). On December 13, the Defense Science and Technology Commission, which oversaw both the missile and nuclear bomb programs, demanded the reduction of the weight and size of the first operational atomic bomb in order to fit it on the DF-2 A.

中國(guó)人的首個(gè)核裝置于一個(gè)月前日韩在线精品福利网页视频，即10月16日進(jìn)行了爆炸試驗(yàn)久草女人爽爆在线播放，2.2萬(wàn)噸的當(dāng)量，重1欧美最强XXXX性受，550公斤日韩美女靠逼一区二区精品视频，遠(yuǎn)遠(yuǎn)超過(guò)東風(fēng)2A的負(fù)載能力（考慮到還要加上200公斤的再入段彈頭載具）。10月13日国产经典露出偷窥91图片专区，負(fù)責(zé)監(jiān)督導(dǎo)彈與核彈兩個(gè)項(xiàng)目的國(guó)防科工委要求減少首個(gè)作戰(zhàn)用核彈的重量和尺寸以便使其能夠裝入到東風(fēng)2A上婬片A片AAA毛片AV。1965年11月，兩彈合一的導(dǎo)彈成功進(jìn)行了飛行試驗(yàn)爱鲁鲁在线视频免费观看，但核彈頭此時(shí)仍未完成改進(jìn)久久性爱小说。

When the spawning weight range from 0.1～2.0g,it has the positive correlation with hatch amount,but when the spawning weight exceeds 2.0g,hatch amount will reduce.(5) Analyse the content of heavy metals and pesticide residues for soil and aquaculture water in W.pigra with the help of atomic absorption spectrophotometers,atomic fluorescence spectrophotometers and gas chromatography.

結(jié)果表明，螞蟥產(chǎn)卵和孵化的最適溫度為25℃欧美精品永久，產(chǎn)卵的最佳體重為20g左右操黑人逼；溫度能影響螞蟥產(chǎn)卵前后的體重，而體重大小對(duì)產(chǎn)卵前后體重變化影響不明顯黄色网站国产日本；當(dāng)卵重在0.1～2.0g之間時(shí)與孵出量成正比国产iGAO在线，當(dāng)卵重大于2.0g時(shí)孵出量反而有所下降。