大喘气 发表于 2025-3-25 06:17:26
Radar Hardware,The function of the transmitter in a pulse radar is to produce high-energy pulses with the required waveform, radio frequency and repetition rate. The transmitter has two major subsystems. These are the transmitting device itself, and the pulse modulator which turns it on and off (see figure 1.1). We now describe them in turn.BALE 发表于 2025-3-25 10:49:22
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Paul A. Lynn BSc (Eng), DIC, PhD, MIEE, C Engdid not exist. The explanation is undoubtedly that the subject is still in a stage of early development, and that the methodologies have still a very limited applicability. It is not possible to give rules for general application of fracture mechanics concepts. Yet our comprehension of cracking andhauteur 发表于 2025-3-26 11:38:23
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Towards a Context-Sensitive User Interaction Framework for Information Systems,rements and preferences regarding an application’s user interface. The context describes the current physical and social environment of the user, his activity and locomotion, as well as the current location and time. Hence, different user interfaces may be more suitable in specific contexts than oth