Abstract: A method for regenerating different types of copper-containing aluminum alloys using aluminum alloy scrap from aeronautical industry includes detecting a chemical composition of said aluminum alloy scrap and optionally adding a suitable amount of a metal or alloy additive according to a composition requirement of a target aluminum-copper alloy, thereby obtaining a mixture of aluminum alloy scrap and metal or alloy additive; vacuum smelting the mixture of aluminum alloy scrap and metal or alloy additive in a vacuum furnace, wherein impurities are removed and an aluminum alloy solution is formed; filtering the aluminum alloy solution using a filter to obtain a melt comprising a target aluminum alloy composition; and casting the target aluminum alloy composition from said melt.

Abstract: A water environment temperature measurement tool includes measurement boxes and a counterweight box; a plurality of groups of the measurement boxes are provided; the counterweight box is movably connected with a group of measurement boxes; and each measurement box is provided with a temperature measurement instrument inside. The water environment temperature measurement tool further comprises: control mechanisms, each comprising a water inlet pipe, a water retaining member, an elastic member, a control assembly, a rotating seat, a rotating shaft, a second screw rod, a control seat and a rotary assembly. In the water environment temperature measurement tool of the present invention, the control mechanisms can achieve extraction and temperature measurement of water at different water body depths by cooperating with the measurement boxes and the temperature measurement instruments.

Abstract: A method for recycling an aluminum alloy scrap includes performing selective oxidation roasting and washing treatment on the aluminum alloy scrap to obtain an uncoated aluminum alloy scrap; melting the uncoated aluminum alloy scrap in a refining furnace to obtain aluminum alloy melt liquid, online-detecting components of the aluminum alloy melt liquid and adding a metallic copper, a copper alloy, a magnesium alloy or a zinc alloy to the aluminum alloy melt liquid according to the requirements of target alloy components, performing pressure-controlled and oxygen-controlled melting through regulating pressure intensity and oxygen partial pressure in the refining furnace and coupling an external-field stirring mode to obtain refining aluminum alloy melt liquid; filtering the refining aluminum alloy melt liquid, to obtain an aluminum alloy melt with the target alloy components; and casting the aluminum alloy melt.

Abstract: A gradient wettability tool and a fabrication process thereof are disclosed, the gradient wettability tool comprising a tool body and a lyophobic layer arranged on a surface of the tool body. A lyophilic micro-texture is arranged on a part of a surface of the lyophobic layer, and comprises main trapezoid grooves, a wide end of which is arranged in a tool-chip interface of the tool with a distance of 1 to 200 ?m from a midpoint of the wide end of the groove to a cutting edge of the tool, and inward-radiated trapezoid microgrooves, a wide end of which is arranged to be connected to a narrow end of the main trapezoid groove. The gradient wettability tool allows directional transport of a cutting fluid and reduction of friction forces at tool-workpiece and tool-chip interfaces, and thus provides wear reduction.

Abstract: A temperature measuring assembly and an electrical device. The temperature measuring assembly includes a heat conducting element and a temperature measuring element. The heat conducting element is arranged for conducting heat of a to-be-measured device. The temperature measuring element is thermally conductive with the heat conducting element so as to measure a temperature signal of the to-be-measured device according to the heat conducted by the heat conducting element and output the temperature signal to an output connecting element. The heat conducting element and the temperature measuring element are elements separately formed and may be connected as an integral element. The heat conducting element of the temperature measuring assembly has a good insulation and thermal conduction performance and is particularly suitable for measuring the temperature of the to-be-measured device and capable of shortening a temperature measurement response time of the temperature measuring element.

Abstract: The present invention discloses a trans-seasonal cold-storage heat-storage system, comprising an ice-source heat pump, an ice-making machine set, a trans-seasonal energy-storage tank, an exergonic heat exchanger, an air conditioning pump and a cooling heat-storage pump, wherein the condenser in the ice-source heat pump communicates sequentially with the cooling heat-storage pump and the cooling tower via a circulation pipeline, the condenser in the ice-source heat pump further communicates sequentially with the cooling heat-storage pump and the trans-seasonal energy-storage tank via a circulation pipeline, the condenser in the ice-source heat pump further communicates sequentially with the air conditioning pump and the air conditioning cold and heat terminal via a circulation pipeline, to form a circulation loop for supplying heat to the air conditioning cold and heat terminal in winter.

Abstract: Provided is a handcart circuit breaker and a contact device thereof including a contact arm and a moving contact. Inner walls of a cylindrical contact finger base in axial direction respectively have a contact finger groove with a spring contact finger for plugging the contact arm and a fixed contact; a rear of the contact finger base sleeves with a front of the contact arm having a positioning groove larger than a fitting end of the support pin, the contact finger base has support pins extending into the contact finger base; a diameter of a circle corresponding to the fitting end of each support pin is larger than a diameter of a circle corresponding to a bottom of each positioning groove; the contact finger base connects with the contact arm and an elastic support structure is arranged between the contact arm and the inner wall of the contact finger base.

Abstract: The present disclosure discloses a liquid-phase synthesis method of oxytocin under mild conditions for the first time, which is characterized in that three oxytocin fragments which include Boc-Cys(Acm)-Tyr(tBu)-OH, H-Ile-Gln(Trt)-Asn(Trt)-Cys(Acm)-Pro-OMe and H-Leu-Gly-NH2 are synthesized for the first time, the fragments are assembled to synthesize an all-protected oxytocin amino acid sequence, iodine is used to remove Acm while cyclization is performed to form a disulfide bond to obtain protected cyclic oxytocin, trifluoroacetic acid is used to remove residual protecting groups to obtain crude oxytocin, ethyl acetate is used to perform recrystallization, and reversed-phase chromatography purification is performed to reach high-purity (crude product purity reaches 95%) and high biological value of oxytocin (588 IU/mg).

Abstract: The present invention discloses a trans-seasonal cold-storage heat-storage system, comprising an ice-source heat pump, an ice-making machine set, a trans-seasonal energy-storage tank, an exergonic heat exchanger, an air conditioning pump and a cooling heat-storage pump, wherein the condenser in the ice-source heat pump communicates sequentially with the cooling heat-storage pump and the cooling tower via a circulation pipeline, the condenser in the ice-source heat pump further communicates sequentially with the cooling heat-storage pump and the trans-seasonal energy-storage tank via a circulation pipeline, the condenser in the ice-source heat pump further communicates sequentially with the air conditioning pump and the air conditioning cold and heat terminal via a circulation pipeline, to form a circulation loop for supplying heat to the air conditioning cold and heat terminal in winter.

Abstract: The present disclosure discloses a temperature measuring assembly and an electrical device. The temperature measuring assembly comprises a heat conducting element and a temperature measuring element, wherein the heat conducting element is arranged for conducting heat of a to-be-measured device, the temperature measuring element is arranged to be thermally conductive with the heat conducting element so as to measure a temperature signal of the to-be-measured device according to the heat conducted by the heat conducting element and output the temperature signal to an output connecting element; and the heat conducting element and the temperature measuring element are elements separately formed and may be connected as an integral element.