Abstract: An air conditioning system includes: an air conditioner box, an upper deck main air duct, and two upper deck transition air ducts. The air conditioner box is disposed on a body of a double-deck vehicle, and includes two upper deck air outlets. The upper deck main air duct is disposed at a top of an upper deck of the body of the double-deck vehicle, and includes two upper deck air inlets. The two upper deck air outlets and the two upper deck air inlets are staggered in a horizontal direction. Each of the two upper deck transition air ducts is communicated with one of the two upper deck air outlets and one of the two upper deck air inlets. Inner walls of the two upper deck transition air ducts are in smooth transition with inner walls of the two upper deck air outlets and the two upper deck air inlets.

Abstract: The present invention relates to a compound represented by general formula (I) or a stereoisomer, deuterated compound, solvate, prodrug, metabolite, pharmaceutically acceptable salt or eutectic crystal thereof, and an intermediate thereof, and use thereof in IRAK4-related diseases such as an autoimmune disease, an inflammatory disease or cancer.

Abstract: Disclosed are a vehicle power transmission system and a vehicle power system. The vehicle power transmission system includes two motor output shafts, two power output shafts and two transmission mechanisms respectively connected between the two motor output shafts and the two power output shafts correspondingly. Each transmission mechanism includes a motor output gear, a power output gear and a middle transmission gear structure. The motor output gear is arranged on a motor output shaft, and the power output gear is arranged on a power output shaft. The middle transmission gear structure is in transmission connection with the motor output gear and the power output gear. The two power output shafts extend in a first direction, along the first direction, projections of the two motor output shafts are at least partially overlapped and/or projections of the two transmission mechanisms are at least partially overlapped.

Abstract: A differential power amplifier includes an input matching network, a first-stage amplification circuit, a first inter-stage matching network, a second-stage amplification circuit, a second inter-stage matching network, a third-stage amplification circuit, and an output matching network. The first-stage amplification circuit and the second-stage amplification circuit are single-ended input single-ended output circuits. The third-stage amplification circuit is a dual input dual output circuit. The second inter-stage matching network includes a first transformer T1, a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2. The output matching network includes a second transformer T2. The inter-stage matching networks and the output matching network are realized by the first transformer T1 and the second transformer T2, which reduces an inter-stage matching difficulty, optimizes input return loss and gain, and improves output power.

Abstract: Disclosed are a vehicle power transmission system and a vehicle power system. The vehicle power transmission system includes two motor output shafts, two power output shafts and two transmission mechanisms respectively connected between the two motor output shafts and the two power output shafts correspondingly. Each transmission mechanism includes a motor output gear, a power output gear and a middle transmission gear structure. The motor output gear is arranged on a motor output shaft, and the power output gear is arranged on a power output shaft. The middle transmission gear structure is in transmission connection with the motor output gear and the power output gear. The two power output shafts extend in a first direction, along the first direction, projections of the two motor output shafts are at least partially overlapped and/or projections of the two transmission mechanisms are at least partially overlapped.

Abstract: A differential power amplifier includes an input matching network, a first-stage amplification circuit, a first inter-stage matching network, a second-stage amplification circuit, a second inter-stage matching network, a third-stage amplification circuit, and an output matching network. The first-stage amplification circuit and the second-stage amplification circuit are single-ended input single-ended output circuits. The third-stage amplification circuit is a dual input dual output circuit. The second inter-stage matching network includes a first transformer T1, a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2. The output matching network includes a second transformer T2. The inter-stage matching networks and the output matching network are realized by the first transformer T1 and the second transformer T2, which reduces an inter-stage matching difficulty, optimizes input return loss and gain, and improves output power.