The observational work is carried out on a range of telescopes.观测工作借助于各种望远镜。We have experimental and observational evidence concerning things which happened before and after the origin of life.有关生命起源前后发生了什么，我们通过实验和观察得出了一...
A uniformly congruent security model is presented based on observational congruence.基于观察同余等价,构造了一类一致同余安全模型.We have experimental and observational evidence concerning things which happened before and after the origin of l...