To make a transducer by painstakingly micro-machining a brittle block of ceramic material can take many hours of work, though.
但是制造一个换能器需要利用微机械技术，在一块质地脆硬的陶瓷材料上精心加工，耗费数个小时才能完成。
Selection of transducer type, footprint size, and frequency are critical to successful nerve block performance.
传感器类型，占用空间大小，频率的选择是成功神经阻滞的关键。
Two kinds of SAWF using respectively usual and SPUDT tapered transducers with 15% fractional bandwidth are designed on Y128. One transducer is block weighted, and the other one withdrawal - weighted.
我们在Y128基片上采用一般型和SPUDT型锥型换能器制作了相对带宽约15%的声表面波滤波器，一个换能器采用“块加权”，另一个换能器采用抽指加权。
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