synchroscope / ˈsɪŋ krəˌskoʊp /

📖毕业后词汇同轴心镜同轴心显微镜同轴器同轴心

synchroscope 的定义

n. 名词 noun
  1. an instrument for determining the difference in phase between two related motions, as those of two aircraft engines or two electric generators.