The web found recently dates to the Cretaceous period . At that time, dinosaurs walked the earth.

Jurassic System entered oil-generating stage in Late Cretaceous Period, and entered oil-generating peak in Tertiary Period.

侏罗系地层在晚白垩世开始进入生油期,第三纪时进入生油高峰,这时侏罗系地层经受的最高古地温为137℃.

Ankylosaurus lived 70 to 65 million years ago. That time was called the late Cretaceous period.

甲龙生活在6500万年~7000万年前, 这个时候是白垩纪晚期.

This clam fossil is from the Cretaceous Period, approximately 100 million years ago.

这个蛤化石来自大约一亿年以前的白垩纪时期.

Albertosaurus lived 76 to 74 million years ago. That time was called the late Cretaceous period.

阿尔贝塔龙生活在7400万~7600万年前, 这个时期是白垩纪晚期.

Tentative Study on Arsenite Oxidation

三价砷氧化技术初步研究

Photo-transformation is one of important factors affect-ine the vertical distribution of arsenite.

光致转化是影响水中亚砷酸盐垂直分布差异的一个因素。

Effects of Arsenite and Arsenate on Gap Junctional Intercellular Communication

亚砷酸钠和砷酸钠对细胞缝隙连接间通讯的影响

The Antagonism and Mechanism of Selenium Compounds against Sodium Arsenite Inhibition Effect on Mitochondrial Enzymes in Rats

硒多糖、亚硒酸钠对大鼠肝线粒体酶的影响及其拮抗亚砷酸钠毒性作用的机理

In this study, the effects of sodium arsenite on cell division, growth and death in yeast were analyzed.

本文以酵母细胞为主要材料，研究了亚砷酸钠诱导细胞死亡的作用机制。

Toxic effect of arsenite on the expression of liver multidrug resistance-associated protein 2 in rat

砷对大鼠肝脏多药耐药相关蛋白2影响的研究

Reproductive toxicity of sodium arsenite in male mice

亚砷酸钠对雄性小鼠的生殖毒性作用

And try to find the different effect of different UV irradiation conditions on arsenate and arsenite adsorption mechanism.

考察了不同的紫外光照射情况对三价砷和五价砷吸附机理的影响。

This paper presents the results of studies on cytogenetic effects of sodium arsenite on mouse bone marrow cells.

本文报告了亚砷酸钠引起小鼠骨髓细胞的细胞遗传学效应。

Influence of Sodium Selenite and Sodium Arsenite on the Micronucleus Rate in Mouse Marrow Cells

亚硒酸钠和亚砷酸钠对小鼠骨髓细胞微核率的影响

Determination of Arsenate and Arsenite in Drinking Water and Bottom Mud by Ion Chromatography

离子色谱法测定饮用水及底泥中砷酸盐和亚砷酸盐

The arsenic is applied abroad, and is a toxic trace element, especially arsenite.

砷的应用范围广、毒性大，尤其是三价砷。

Influence of Sodium Selenite on Sperm Abnormalities Induced by Sodium Arsenite in Mice

亚硒酸钠对亚砷酸钠所致的小鼠精子畸形的影响

The Relationship between Lipid Peroxidation and Hormesis Caused by Sodium Arsenite

亚砷酸钠所致兴奋性效应与脂质过氧化的关系

Effects of Sodium Arsenite on Glutathione S-transferase and Its Genes Expression in Mice

亚砷酸钠对小鼠体内谷胱甘肽S-转移酶活力及其基因表达的影响

PH Variation as Indicator for the Reaction between Arsenite and Absorbents

几种吸附剂吸附亚砷酸根离子过程中pH值的动态变化