What happened to that brilliant idea that you once had? Did you ignore it because you thought that it was just a little ......

A controllable optical delay line using a Brillouin optical fiber ring laser is demonstrated and a large time delay is o......

社会生活中有许多不义,不义是人类特有的现象,不要企望根除不义,人们企图根除不义的努力曾导致了更多的灾难和不义.规避和消解不义......

Annual loss of crop yields due to agricultura I in sect pests are approximately 10%.Effective and safe management of ins......