countably additive class

countably additive class的基本解释

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可数加性类

与countably additive class相关的网络例句 [注：此内容来源于网络，仅供参考]

The research result shows that the flowability, moldability, cohesiveness of high performance concrete of hill sand are significant by comparison with ordinary concrete on mechanical properties, long term properties, and durability. Motar flowability decreases with the increase of single-mixed active additive. The flowability can be largely improved by double mixing of active additive and super plasticizer NF. This is because not only the active additive has filling effect but also the dispersing effect induced by surface action between additive and super plasticizer NF. And the optimal content of materials are: super plasticizer NF≥0.8%, fly ash 20%, PS 20~30%,zeolite powder≤20%,SF 5~8%; The negative influence of hill sand powder should be avoided by controlling of powder content and the use of active additive and super

研究表明：随着单掺活性掺合料掺量的增加，砂浆流动性减小，活性掺合料与萘系高效减水剂NF双掺使用，比使用同样剂量萘系高效减水剂NF的基准浆体流动性明显增大，这是由于玻璃体材质活性掺合料不仅有填充效应，更主要的是它与高效减水剂之间的表面物化作用产生了分散性，而活性掺合料对浆体的流化作用效果主要是依赖于其分散性；能有效改善胶砂流动性的适宜掺量为：萘系高效减水剂不小于0.8%，粉煤灰掺量为20%，PS掺量为20~30%，沸石矿粉掺量不宜大于20%，SF掺量为5~8%；通过对粉末含量的限制，并借助活性掺合料、高效减水剂的合理使用，就可以避免山砂粉末含量的负面影响，配制出密实度高，抗渗性能优异，具有良好的耐久性能，并具有良好的体积稳定性的山砂高性能混凝土。

Monte Carlo simulations were conducted to study the new approaches of QTL mapping, the results indicated that general least squares method, which was widely applied in mixed linear model, could unbiasedly estimate all genetic main effects, including additive effects, dominance effects and epistatic effects of additive by additive, additive by dominance, dominance by additive, dominance by dominance.

对新提出的QTL分析力法进行了Monte Carlo模拟研究，结果表明，广泛应用于混合线性模型的广义最小二乘法能够无偏估计加性效应，显性效应以及加加、加显、显加、显显上位性效应等各项遗传主效应；运用线性无偏预测法能够无偏预测上述各项遗传主效应与环境的互作效应；基于QTL效应的杂种优势预测也是无偏的。

We prove the depicting condition by base of countably compact space and countably paracompact space in weaker A_2-space.

给出并证明了弱A2空间中可数紧致、可数仿紧致空间用基刻画的条件。

与countably additive class相关的网络解释 [注：此内容来源于网络，仅供参考]

countably additive class：可数加性类

countable superadditivity 可数超加性 | countably additive class 可数加性类 | countably additive family 可数加性族