diodes二极管dioden.二极管diode x-ray tube二级管X线管diode laser system二极管激光系统diode rectification二极管检波diode phase shifter二极管移相器diode peak detector二极管峰值检波器diode laser pointer二极激光指示器diode matrix method二极管矩阵法diode cutoff region二极管截止区Diode-side-pump侧面泵浦diode transformator二极管变压器