定向: directional; orient; orientation; sense of orientation; predetermined orientation 短语和例子无线电定向 radio range orientation; 给 ... 定向 give an orientation to; 定向爆破 directional [directed] blasting;
感应: 1.(受外界影响而引起相应的感情或动作) response; reaction; interaction2.[生物学] (刺激感受性) irritability3.[电学] (诱导) induction 短语和例子磁感应 magnetic induction; 感应电 induced electricity; faradic electricity; faradic cur