On Dec. 27, 2022, Carvana shares closed at an all-time low of $3.72, with years of persistent losses and a sizable debt load seemingly portending disaster. Roughly 3.5 years later, Carvana is trading ...
Abstract: A microstrip dual-split-ring antenna array for fifth-generation (5G) millimeter-wave dual-band applications is presented in this letter. The microstrip dual-split-ring structure is adopted ...
Abstract: Microwave nondestructive testing (NDT) technology developed rapidly, but crack detection in metal surface is facing many troubles, such as hard quantitation and low sensitivity. To solve ...
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