TJC contact net measuring apparatus USES supersonic, electronic, optical and mechanical methods to measure the height and pulling_out value of electricalengine contact net.
接触网测量仪采用超声、电子、光学、机械等手段测量电力机车接触网的高度和拉出值。
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The system also has the potential to use the compact engine as an electrical power source to further reduce the battery burden of dismounted soldiers, which can be as high as 11kg.
His latest invention is an electrical generator based on a 19th-century idea-an unusually efficient kind of engine, called a Stirling engine-which never caught on.