Abstract: The present invention discloses a pullout resistance measuring device and method based on an anchor plate foundation of a submarine slope site. The measuring device includes a support, a moving beam, a hoisting mechanism, a cylinder device, a pulley assembly, a soil sample, a spiral anchor, a traction rope and a force measuring device, where the moving beam is movably mounted on the support; the hoisting mechanism is movably mounted on the moving beam; the cylinder device includes a cylinder; the pulley assembly is movably mounted on the cylinder corresponding to the vertical slit; the soil sample is filled in the cylinder; the spiral anchor is buried in the soil sample; one end of the traction rope is connected to the hoisting mechanism, and the other end is directly connected to the spiral anchor; and the force measuring device is arranged on the traction rope.

Abstract: Disclosed are a wireless communication system and method and an expansion unit of a flat network architecture. The wireless communication system comprises at least one baseband signal source, an expansion unit (EU) and at least one remote radio unit (RU) connected to the EU. By overlapping the baseband signals output by each baseband signal source, remote transmission and wireless coverage of multimode digital signals are achieved, thereby solving the problem of system performance degradation caused by the interaction of radio-frequency analog signal transmission and optical transmission in the prior art.

Abstract: Disclosed are a wireless communication system and method and an expansion unit of a flat network architecture. The wireless communication system comprises at least one baseband signal source, an expansion unit (EU) and at least one remote radio unit (RU) connected to the EU. By overlapping the baseband signals output by each baseband signal source, remote transmission and wireless coverage of multimode digital signals are achieved, thereby solving the problem of system performance degradation caused by the interaction of radio-frequency analogue signal transmission and optical transmission in the prior art.