他手里拿着一根有金制端部的手杖。
用一根连线把两个罐头盒串起来，线的两端各自固定在每个罐头盒底部的小孔上，拉紧以后，就做成了相距几码远的很好的一部电话机。
Two tins, connected with string fixed through a hole in the bottom of each tin and stretched tight, form a good telephone over a few yards.
对压板松动时大型汽轮发电机定子端部单根绕组的两自由度主共振问题进行了研究。
Two degree of freedom principal resonance of generator end winding is studied when the clamping plates are loose.
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