radio measurement meaning in English

无线电测量

Ultrasonic distance measurement belongs to the category of uncontact measurement . in the condition it has advantage which contact measure does n ' t has contrasting with uncontact measurement . ultrasonic measure is not influenced by rays of light in the range , and has simple struture , and cost cheaply cotrasting to other uncontract measurement such as laser measurement , rared ray easurement , radio measurement
超声波测距属于非接触检测的范畴，它在许多场合有接触测量不可比拟的优越性，同时与激光、红外、无线电等其它非接触性检测相比，超声检测在一定距离范围内不受光线影响、结构简单、成本低等特点。