ÇëÊäÈëÒª²éѯµÄ´Ê£º Çл»´Êµä

Èç¹ûδÄܲ鵽ÄúµÄ½á¹û£¬ÇëÓÅ»¯ËÑË÷ºóÖØвéѯ¡£

´«Ëͳ¬Éù²¨£¨£Ó£©Éù²¨

---

[רÀûººÓ¢´Êµä]

´«Ëͳ¬Éù²¨£¨£Ó£©Éù²¨
transmitting ULTRASONIC(S) acoustic waves

ÊÇʲôÒâ˼£¬´«Ëͳ¬Éù²¨£¨£Ó£©Éù²¨µÄ½âÊÍ£¬´«Ëͳ¬Éù²¨£¨£Ó£©Éù²¨µÄ·­Òë