抑制 发表于 2025-3-23 10:54:51
http://reply.papertrans.cn/15/1441/144018/144018_11.png反话 发表于 2025-3-23 16:11:37
http://reply.papertrans.cn/15/1441/144018/144018_12.png概观 发表于 2025-3-23 21:15:06
http://reply.papertrans.cn/15/1441/144018/144018_13.png洞穴 发表于 2025-3-24 00:00:11
Aufgaben aus der Flugzeugstatikctors.. Other approaches have been based on linear and phased arrays.. Shoup, et. al.., proposed the use of sparsely-sampled two-dimensional arrays a number of years ago, and the research group at the University of Michigan. currently builds and uses actual sparsely-sampled two-dimensional arrays fo土产 发表于 2025-3-24 02:49:24
http://reply.papertrans.cn/15/1441/144018/144018_15.pngIntentional 发表于 2025-3-24 08:27:03
http://reply.papertrans.cn/15/1441/144018/144018_16.pngRotator-Cuff 发表于 2025-3-24 13:44:29
http://reply.papertrans.cn/15/1441/144018/144018_17.pngBravado 发表于 2025-3-24 18:14:24
Aufgaben aus der Technischen Mechanikaraxial approximation is replaced by a scale factor, the result can also be expressed as a forward difference and evaluated in a single-addition time. Assuming a 1500 m/s background velocity, the maximum errors over a 3 x 3 cm region on the transducer axis fell below 1/3 the wavelength of a 3.5 MHz步兵 发表于 2025-3-24 22:51:11
http://reply.papertrans.cn/15/1441/144018/144018_19.pngMechanics 发表于 2025-3-25 01:34:37
Aufgaben aus der Technischen Mechanik regions are often not perceptible. The contrast of the image can be stretched using any of a number of contrast-enhancement methods such as histogram modification. Finally, the ultrasonic beam, having a depth-variant width, causes the image to be somewhat blurred. The image may be high-pass filtere