外国的考古学者们联翩而至.Foreign archaeologists are arriving one after another.他是位考古学家，过去的一年都在参与克里特岛上的一项考古发掘工作。He's an archaeologist and has been on a dig in Crete for the past year.考古天文学家们广泛开展了对这类古代遗址的探索.Archaeoastronomers hav...
自动调压器有无功功率误差控制吗?Yes. It is adopted as an additional generator error control.首先, 调压器的调节方法需要优化.In the first place, the adjusting methods of boosters need optimizing.交流源可以更好的代替变隔离压器+调压器.AC source is a better alternative to ...