1)cathetus['kæθitəs],中直线2)pencil of central lines,中心直线束3)direct trunk line,直通中继线4)VCL (Vertical Center Line),垂直中心线5)a direct route; a direct flight; a direct hit.,直线线路;直线航行;直接命中。6)neutral line direct current,中性线直流电流
用法和例句
The necessity of monitoring the transformer neutral line direct current in the hybrid AC/DC systems is elaborated .