3.It is greatly senseful to study nonlinear phenomenon of transducer for understanding the active state of transducer exactly and increasing the acoustic-electric index.
4.Novel oncogene with kinase-domain (NOK) can activate multiple mitogenic signaling pathways including the janus kinases (JAK) and signal transducer and activator of transcription proteins (STAT).
8.Transducers are made from arrays of tiny piezoelectric structures that convert electrical signals into ultrasound waves by vibrating at an appropriate frequency.
9.However GE, a large American conglomerate, is now proposing to make ultrasound transducers by " additive" manufacturing—or three-dimensional printing, as it is also known.
10.The GE process for making a transducer begins by spreading onto the print table a thin layer of ceramic slurry containing a light-sensitive polymer.
11.Doctors can use an ultrasound transducer to make ultrasound waves that travel through your body, and reflect off different squishy bits, like organs, or a fetus.
12.The waves are then reflected back from areas where there is a change in density and on their return the transducer works in reverse, producing a signal which the scanner can process into a digital image.
13.So for example, we can make them all come together to a point, and they can we can make transducers from the bottom and from the top come to two different points that are half a wavelength apart.
程
章对传感器弹性
的材料和结构进行了研究。
验研究为主，对大功率压电超声换能器的非线性进行了初步研究，
选
垂直的部件就是力
地加工一块
小时的工作时间。
