Pitchblende and chalcolite are much more radioactive than uranium itself.沥清铀矿和铜铀云母比纯铀的放射性强得多.Chalcolite ( crystallized phosphate of copper and uranium ) is about twice as radioactive as uranium.铜铀云母 ( 铜和铀的磷酸盐结晶体 ) 的放射性是铀...
For those who work on the site, bridging is hard in other ways.在其它方面,对现场施工人员来说, 架桥则是一项很艰苦的工作.Homogeneous bridging groups always raise the glass temperature.同类桥联基因总是提高玻璃化温度.Heterogeneous bridging groups can raise the glas...
The important fators which affect culture conditions of ? Halobacterium halobium ? B were screened by Plackett? Burman design.利用Plackett-Burman设计筛选出影响盐生盐杆菌( Halobacteriumhalobium )B培养条件的重要因素,然后利用正交试验设计对这些重要因素加以优化....
Its principal constituents are fuzzy logic, neural network and evolutional computing.它主要由模糊逻辑 、 神经网络、进化计算等组成.Optimum Method About Weights and Thresholds of Neural Network.神经网络权值和阈值的优化方法.The MNN model is developed by seve...