查询词典 urceus

The effects of UV-B radiation on population growth of rotifer Brachionus urceus were studied using the method of population accumulative culture.

运用群体累计培养的方法研究了UV-B辐射增强对壶状臂尾轮虫种群增殖的影响。

The filtering and feeding rate of rotifer Brachionus urceus were studied under different temperature, salinity, food species, pH and light.

研究了壶状臂尾轮虫在不阔的温度、盐度、饵料种类、pH和光照条件下滤水率和摄食率的变化情况。

The filtering and feeding rate of rotifer Brachionus urceus were studied under different temperature,salinity,food species,pH and light.

研究了壶状臂尾轮虫在不同的温度、盐度、饵料种类、pH和光照条件下滤水率和摄食率的变化情况。

The effect of food concentration on characteristics in life history of Brachionus urceus, such as the duration of principal development stage, net reproductive rate and mixis rate in all the offspring, was studied by the method of clonal culture.

方法］采用单个体培养法，研究了不同浓度的蛋白核小球藻对壶状臂尾轮虫主要发育阶段历时、净生殖率以及全部后代的混交雌体百分率等生活史特征的影响。

At the experimental intensity of 20W/cm^2 and in the dose range studied (0.00, 0.24, 0.48, 0.72, 0.96 and 1.20kJ/m^2), both the population number and growthrate was the highest in the control and decreased with the increment of UV-B radiation. In addition, the population number and growth rate of rotifer Brachionus urceus showed a similar tendency of decrease with the dose increase of UV-B radiation. Both of them could be used as an ideal biomarker for the enhancement of UV-B radiation.

实验表明，在本实验辐射强度(20W/平方公分)和剂量范围内（0.24、0.48、0.72、0.96和1.20kJ/平方人公尺）壶状臂尾轮虫的种群数量和种群增殖率均以对照组最高，各UV-B辐射处理组则随UV-B辐射剂量的增大而呈一致性减小，说明该种群的种群数量和种群增殖率随UV-B辐射的增强显示一致性的影响，两者都可以作为大气UV-B辐射强弱的生物指标。

However, the growth of rotifer fed on high-density Chlorella pyrenoidosa was inhibited notably, and there was no effect on its fecundity. Sexual reproduction of Brachionus urceus was not promoted by improving the density of diet.

结论］低食物浓度下，轮虫生命周期缩短、繁殖力降低；食物浓度过高，能抑制轮虫生长，但对繁殖力影响不大；提高食物浓度，对壶状臂尾轮虫的有性生殖没有明显的促进作用。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。