Abstract: An electronic device includes a first body, a second body, and a first antenna. The first body and the second body are configured to bend relatively. A periphery of the first body includes a first conductive frame, and a periphery of the second body includes a second conductive frame. The first conductive frame includes a first gap. The first antenna is arranged in the first body. A feeding end of the first antenna is connected to the first conductive frame. The first antenna includes a first working mode and a second working mode. In the first working mode, the first antenna transmits a signal based on the first conductive frame having the first gap. In the second working mode, the first antenna transmits the signal based on the first conductive frame and the second conductive frame.

Abstract: A method for preparing voriconazole L-camphorsulphonate and voriconazole. The method for preparing voriconazole L-camphorsulphonate comprises: method 1: dissolving (2R,3S)/(2S,3R) isomer mixture and L-camphor sulphonic acid in water and acetone, and performing crystallisation filtration to obtain voriconazole L-camphorsulphonate; method 2: (a) dissolving a mixture of isomer mixture and L-camphor sulphonic acid in a first solvent and then performing crystallisation filtration; or (a?) dissolving L-camphorsulphonate of the isomer mixture in a first solvent and then performing crystallisation filtration; (b) concentrating the filtrate obtained in step (a) or (a?) into a solid; and (c) dissolving the solid obtained in step (b) in a second solvent and performing crystallisation filtration to obtain voriconazole L-camphorsulphonate. Adjusting the resolution solvent effectively reduces production costs and facilitates recycling of the resolution solvent.

Abstract: An electronic device is provided in the present disclosure. The electronic device includes a first main body having a first metal shell and a second main body having a second metal shell, where the first metal shell has a first slot; and the second metal shell has a second slot; and further includes an antenna circuit disposed in the first metal shell, where the antenna circuit has a radiator; and the radiator and the first slot satisfy a coupling condition. In response to being in a first state, the radiator and the second slot satisfy the coupling condition, and the radiator radiates a signal through the first slot and the second slot, simultaneously; and in response to being in a second state, the first slot and the second slot do not satisfy the coupling condition, and the radiator radiates the signal through the first slot.

Abstract: An electronic device is provided in the present disclosure. The electronic device includes a first main body having a first metal shell and a second main body having a second metal shell, where the first metal shell has a first slot; and the second metal shell has a second slot; and further includes an antenna circuit disposed in the first metal shell, where the antenna circuit has a radiator; and the radiator and the first slot satisfy a coupling condition. In response to being in a first state, the radiator and the second slot satisfy the coupling condition, and the radiator radiates a signal through the first slot and the second slot, simultaneously; and in response to being in a second state, the first slot and the second slot do not satisfy the coupling condition, and the radiator radiates the signal through the first slot.