金丝雀
发表于 2025-3-23 11:41:27
otripsy. Ever since the earliest developments of medical ultrasound there has been an interest in the measurement and characterisation of the ultrasonic fields generated in these applications, either for assessment of performance of equipment or for safety. Until recently, procedures for acoustic ou
抱负
发表于 2025-3-23 16:20:28
Fundamentals of Ultrasonic Propagation,of the characteristic parameters and much of the basic terminology will be introduced here and taken further during later chapters. However, these later chapters will deal with the practical aspects of measurement and characterisation, often assuming that the basic physical principles of measurement have been established.
Entropion
发表于 2025-3-23 19:53:56
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异常
发表于 2025-3-23 22:12:56
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火海
发表于 2025-3-24 03:50:27
Overview of Measurement Techniques,tance of accurate measurement techniques for determining the acoustic output of equipment and the assessment of which acoustic parameters are most significant for safety. Both topics will be considered in this chapter.
草率女
发表于 2025-3-24 08:56:34
Book 1991 Laboratory. In addition to the lectures, the course consisted of a series of practicals to allow participants to gain experience of making measurements. Teddington, UK Roy C. Preston February 1991 Contents List of Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Commonplace
发表于 2025-3-24 12:48:12
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Afflict
发表于 2025-3-24 16:21:59
can be utilized for efficient and high-quality drilling techniques, the basic principles of which will be explained in combination with the necessary engineering expertise. A beam steering system for helical drilling with rotating beam profile will be presented. Finally, various diagnostic methods w
造反,叛乱
发表于 2025-3-24 19:09:33
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后来
发表于 2025-3-25 02:17:12
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