Scientists say they'll next try to nail down whether macaque lead levels are indeed predictive of lead poisoning in humans.

科學家們的下一步就是確定猴子體內(nèi)的鉛含量是否與人鉛中毒有關(guān)聯(lián)。

However, the principal lead is regarded as one of manifold kinds of lead in learning schools.

而校長領(lǐng)導(dǎo)被認為是學習型學校眾多領(lǐng)導(dǎo)中的一種欧美多毛XXXXX性喷潮6。

The effects of different lead concentration in meadow brown earth, red earth and gray limestone soil on wetland rice growth and its uptake of lead were investigated. The results showed that all treatments did not significantly change the biomass of wet...

水稻吸收的Pb與土壤中的添加Pb、總量Pb和DTPA可提取Pb含量之間均有著極顯著的相關(guān)性，并由此計算了Pb的表觀臨界含量一级欧美一级在线，其中湖北土對Pb的污染十分敏感(表觀臨界含量為79mgPb·kg-1)。

Rapid economic growth may lead to an overextension of resources and lead to an eventual catastrophic meltdown.

經(jīng)濟迅速增長可能導(dǎo)致資源的過度使用毛片手机在线，并造成巨大的災(zāi)難国产精品秒播无毒不卡。

Halogen ion can enter and break the phosphate glass network when they exceed certain content. The short range structure of metaphosphate and polyphosphate glasses are all built with phosphate chains. Most of lead ions still act as network modifiers, and some lead ions enter glass network to form tetrahedron or Pb-O-P linear linkages.

Br〓和F〓離子達到一定濃度時就會進入網(wǎng)絡(luò)，使得玻璃網(wǎng)絡(luò)發(fā)生斷裂十八岁禁看的黄色网站。P〓O〓含量為50mol％和40mo1％的玻璃樣品結(jié)構(gòu)都為鏈狀結(jié)構(gòu)国产系列第一页，一部分pb〓離子進入玻璃網(wǎng)絡(luò)中作為網(wǎng)絡(luò)形成體，形成四面體或Pb-O-P鍵：而大部分的pb〓離子仍然作為網(wǎng)絡(luò)修飾本免费中文字幕WWW。

For a long time to place dishes of water increased nitrite can lead to methemoglobinemia, or even can lead to nitrite poisoning.

長時間放置的菜水亞硝酸鹽增高对白露脸视频一区二区在线，會導(dǎo)致高鐵血紅蛋白血癥日本619视频网站www，甚至可導(dǎo)致亞硝酸鹽中毒。

The research team have ever fabricated the thin-film of ther mocouples by Multiple Arc Ion plating, and the contributions of the film are deviating from the target, so the Seebeck coeffcient is not in accordance with the normal thermocouples composed of Ni-Cr/Ni-Si wires, which lead to the larger error when Ni-Cr/Ni-Si wires was applied to the cuting test as compensation lead.

本課題組曾采用多弧離子鍍方法制備Ni-Cr/Ni-Si薄膜熱電偶国产福利在shipin，由于薄膜成分偏離標準大塊Ni-Cr/Ni-Si材料AV一本大道香蕉大在线不卡，導(dǎo)致熱電偶塞貝克系數(shù)與標準Ni-Cr/Ni-Si絲式熱電偶相差較大。

Many of the countries which lead in oil production also lead in natural gas production.

許多生產(chǎn)石油的主要國家同時也是生產(chǎn)天然氣的主要國家性爱黄色视频网。

Then, in 1979, a well-designed study by pediatrician and psychiatrist Herbert Needleman resolved the dispute by establishing a direct correlation between the lead content of a child's teeth and bad classroom behavior. Twelve years later follow-up studies on these children found that those who had the highest lead levels in their teeth as children continued to have school problems through their last year of high school including more school failures, reading disabilities, and lower class standing.

到1979 年最新欧美性爱网址，由兒科醫(yī)生兼精神病學家赫伯特·內(nèi)德勒曼設(shè)計的一個著名實驗證明不良的學習成績與兒童牙齒中的鉛含量直接相關(guān)，從而為爭議下了定論12 年后對這些人的后續(xù)研究表明av拍毛片自拍，當年牙齒中含鉛量最高的孩子在中學畢業(yè)前一直存在學習上的問題免费精品国产自产拍在线观，包括考試不合格、閱讀障礙和班級排名靠后不卡的免费淫秽视频。

A new method was studied for the determination of Nickel in Lead ingot in nitre acid after the main part were separated by Lead Sulphate.

方法操作簡單亚洲欧美日韩国产综合在线一区，精密度、準確度均可滿足分析要求强奸网址，適用于鉛錠中0 0001%～0 005%鎳量的測定超碰观看欧美。