很像弓] 发表于 2025-3-23 12:56:52
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Die Relativitätstheorie Einsteinsmall or be capable of following all rates of amplitude variation; film cannot be made with infinitely small grain size. Therefore, any detection and recording system can be considered to be a sampling system.Pillory 发表于 2025-3-24 04:21:27
Die Grundgesetze der klassischen Mechanik,d, one of which should have a wave front of simple geometry so that the wave front can easily be simulated in a beam of light. Usually this means that the wave front should be either spherical or plane. This sound beam will be referred to as the reference beam. The other beam, referred to as the objNebulous 发表于 2025-3-24 07:19:49
Die Grundgesetze der Elektrodynamik,ecording system. We have described in great detail the two methods that are furthest along in the development process. In this chapter we discuss a number of methods that have appeared in the literature and some which we have worked on.护身符 发表于 2025-3-24 12:24:43
https://doi.org/10.1007/978-3-642-97759-6eveloped for a specific purpose. This purpose is that of all acoustical probing systems; namely, detecting, locating, and imaging a structure immersed in a medium opaque to electromagnetic radiation. This description encompasses a variety of specific problems, such as nondestructive testing, medicalOFF 发表于 2025-3-24 16:19:43
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http://reply.papertrans.cn/16/1552/155116/155116_19.png情感 发表于 2025-3-25 03:01:03
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