单词	optical pulse counter
释义	optical pulse counter 光脉冲计数器
随便看	principal signal Principal Signal Officer principal simulation error principal's mandate principal social contradiction principal solution principal source of international principal source of international law principal space principal speaker principal species principal spectrum principal spindle principal splitter principal spot principal spread directions principals professional developments principal square root principal square root of matrix principal square submatrix principal's representative principal's successor in interest Principal Staff Assistant Action Officer Principal Staff Element principal status