arm signal中文什么意思

手势信号

• arm:    n. 1.〔pl., 罕 sing. ...
• signal:    n. 1.信号，暗号；信号器。 2. ...
• signal arm:    号志臂; 信号臂

例句与用法

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1. Know the meaning of arm signals and other signals
   要认识手号和其他信号的意义。
2. The arm signals that you give before and during the manoeuvre
   在驶入前和驶入时，应发出手号
3. Arm signals must be correct , clear and given in plenty of time
   手号必须正确、清楚和及早发出。
4. Arm signals must be correct , clear and given in plenty of time
   手号必须正确、清楚和及早发出。
5. Arm signal aspect
   臂板信号示象