There are some problems about the secondary voltage switching between voltage transformers of doublebus.
针对双母线电压互感器二次电压切换存在的问题,提出了电压软切换的新方法。
2
In one experiment, nearly 200 participants boarded a double-decker bus for a tour of Philadelphia.
在一项实验中,近200名参与者登上一辆双层巴士游览费城。
3
However, since droplets from a sneeze can travel the length of a double-decker bus, and a cough can infect anyone within about a metre, this is not always possible.