1) Nature and its series
Nature及其子刊
2) radon and its daughter elements
及其子体
1.
The radon and its daughter elements are the decay products of the radioactive elements such as uranium and thorium and the important carcinogenic factor of causing the lung cancer.
氡及其子体是铀、钍等放射性元素产物，是引发肺癌的重要致病因子。
3) radon and its daughters
氡及其子体
1.
Analyses on anomaly of radon and its daughters above sandstone type uranium deposit;
砂岩型铀矿床上氡及其子体异常分析
2.
This paper has studied the characteristics and formation mechanism of the anomalies caused by radon and its daughters over the sandstone uranium deposit,described the recoil of the Alpha particles,the cluster effect and the natural electric field over the sandstone uranium deposit,and analyzed geological characteristics of the sandstone uranium deposit.
分析了砂岩型铀矿床上氡及其子体异常特征及其形成的机理,介绍了砂岩型铀矿床上氡及其子体经α衰变后产生的α粒子的反冲现象、团簇理论和自然电场,分析了砂岩铀矿床的地质特点、U-Ra平衡、磁化率、自然电位的变化等,对砂岩铀矿勘查的氡及其子体异常解释有一定的指导意义。
3.
Results Radon and its daughters' concentrations in the air of the main workplaces were higher than those of the auxiliary workplaces(P<0.
目的了解某铀矿井下氡及其子体在10年间不同年份、不同季节、不同场所的分布规律,以便有针对性地采取井下降氡措施。
4) Radon and its Progeny
氡及其子体
1.
Objective To study the redox damage of lung and blood cells in rats inhaled radon and its progeny.
目的研究氡及其子体吸入对大鼠肺与血细胞的氧化应激损伤。
2.
Objective To study toxic effect of inhaled radon and its progeny on blood and bone marrow cells of mice.
目的研究氡及其子体对小鼠造血系统的影响。
3.
To study biological changes of the lung in rats exposed to radon and its progeny.
[目的 ]研究大鼠吸入氡及其子体后肺及支气管组织的生物学变化。
5) Thoron and Its Progeny
220Rn及其子体
6) a bear and her young
熊及其崽子
补充资料：NA
内次甲基四氢邻苯二甲酸酐又称甲撑邻苯二甲酸酐，简称NA，分子量164。白色结晶，熔点162～167℃。
有潮解性。易溶于苯、甲苯、丙酮，受热升华，能与水反应成酸。 用作环氧树酯固化剂、硬化玻璃固化剂、橡胶软化剂的中间体、塑料钢丝塘瓷及树酯等表面治化剂、高沸点溶剂、合成润滑剂、纺织整理渗透剂等。
用作环氧树脂的固化剂，参考用量75～95phr，固化条件120℃／2h十150℃／5h或80 ℃／3h十120℃／3h十200 ℃／4h。固化物具有优良的耐热性、耐候性和电性能，耐热200 ℃以上。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条