Abstract: The present application discloses a composite metal oxide semiconductor which is a metal oxide semiconductor doped with a rare earth oxide. Even doping the praseodymium oxide or ytterbium oxide at a small doping amount, oxygen vacancies could be suppressed as well as the mobility be maintained; critically, the thin-films made thereof can avoid the influence of light on I-V characteristics and stability, which results in great improvement of the stability under illumination of metal oxide semiconductor devices. The present application also disclose the thin-film transistors made thereof the composite metal oxide semiconductor and its application.

Abstract: Disclosed are a vibrating diaphragm of a sound-producing apparatus and the sound-producing apparatus. The vibrating diaphragm includes at least one elastomer layer, wherein the elastomer layer is made of butadiene rubber; the butadiene rubber is any one of nickel butadiene rubber, rare earth butadiene rubber and cobalt butadiene rubber, and a content of cis-form is greater than 80% to 100%. The vibrating diaphragm of the present disclosure can maintain excellent acoustic performance under extreme conditions of low temperature. (FIG.

Abstract: Provided is a vibrating diaphragm of a sound-producing apparatus. The vibrating diaphragm includes at least one elastomer layer, wherein the elastomer layer is made from polysulfide rubber; the polysulfide rubber is any one of type A polysulfide rubber, type FA polysulfide rubber and type ST polysulfide rubber, and a molecular weight of the polysulfide rubber is 1000-500000.

Abstract: An adjustment-facilitating vibrating mill includes a base, a grinding cylinder, and a vibrating motor. An elastic mechanism is arranged on the base. The grinding cylinder is fixedly connected to the elastic mechanism. The vibrating motor is arranged on the grinding cylinder. Two sides of the vibrating motor are provided with eccentric mechanisms; each eccentric mechanism includes a fixed eccentric block, an adjustment motor, and an adjustable eccentric block. The fixed eccentric block sleeves an output shaft of the vibrating motor. The adjustment motor is connected to the fixed eccentric block through a mounting seat. The adjustable eccentric block is connected to the adjustment motor through a transmission mechanism. According to the vibrating mill, an included angle between the adjustable eccentric block and the fixed eccentric block is adjusted using the adjustment motor and the transmission mechanism, so that an exciting force can be adjusted without removing the vibrating motor.

Abstract: An elevator car frame, an elevator car and an elevator system. The elevator car frame includes a top, a bottom and uprights extending between the top and the bottom and deviating from a longitudinal middle portion of the elevator car frame, and at least one of the uprights is provided with car guide shoes arranged to enable the elevator car frame, after being installed in an elevator hoistway, to move along a car guide rail disposed in the elevator hoistway through the car guide shoes.