水深海增加10m,压力就增加一个大气压,这是限制深水换能器开发的一大障碍。在深海中所使用的仪器必须突破厚壁这种障碍。用于深水的超声压电换能器,强度上不仅要耐水压,而且在大深度下还要具有稳定的声学性能。本文提出一种在压电振子的后面,采用非压缩性材料的双层结构的声失配层背衬,使压力平衡的超声压电换能器。文中应用菊池、中钵等人 Increasing the depth of the sea by 10 meters increases the pressure by one atmosphere, which is a major obstacle to the development of deepwater transducers. The instruments used in the deep sea must break through the barrier of thick walls. Ultrasonic piezoelectric transducers used in deep water not only have to withstand water pressure but also have stable acoustic properties at great depths. In this paper, a kind of ultrasonic piezoelectric transducer with balanced pressure balance is proposed, which is backed by acoustic mismatched layer of double-layer structure with non-compressive material behind the piezoelectric vibrator. The text of the application of Kikuchi, in the bowl and others