TWO pulses sent by turn (in opposite direction) : One pulse each 180 degrees.

两个脉冲发送转(在相反方向)：一个脉搏每180度。

youdao

TWO pulses sent by turn (in opposite direction) : One pulse each 180 degrees.

两个脉冲发送转(在相反方向)：一个脉搏每180度。

youdao