摘要：
The invention discloses a display device for art design major teaching. The invention specifically relates to the technical field of art teaching. The device comprises a six-face box body, a partitionplate is fixedly arranged on the inner wall of the six-face box body and divides the interior of the six-face box body into a containing cavity and a lamp cavity which are formed front and back, thelamp cavity is formed in the front side of the containing cavity, transparent plates are embedded in the three faces of the front end of the six-face box body, three lamp strips are arranged in the lamp cavity, and an auxiliary mechanism is arranged on the front side of the six-face box body. The light of the lamp strips penetrates through the transparent plates to illuminate an artistic rough sketch, so as to be convenient for students to watch, the local part of the artistic rough sketch is amplified, the art rough sketch is convenient to appreciate clearly and intuitively, and the local part of the art rough sketch is convenient for students who are far away to watch and appreciate; the three transparent plates are embedded in the front three faces of the six-face box body, so that students on the two sides can visually watch the artistic rough sketches on the two sides, and the consistency of the overall teaching level is guaranteed.
摘要：
The invention discloses a prefabricated composite floor slab and a nested structure thereof and belongs to the technical field of composite floor slabs. The prefabricated composite floor slab comprises an integrated structure of the prefabricated composite floor slab and a steel bar truss thereof, wherein the integrated structure comprises a main body floor slab and convex strips directly generated on the two sides of the main body floor slab; a groove penetrating through the surface of the main body floor slab is formed in the main body floor slab; the convex strips and the groove are arranged on the same side surface of the main body floor slab; and in a plurality of main body floor slabs with same structure, the groove in one main body floor slab is mutually nested with two combined convex strips on the side edges of the other two main body floor slabs. The prefabricated composite floor slab has the following benefits: the groove and the convex strips on each of the composite floorslab can be mutually nested to enlarge and thicken nested assembling, so that transverse stress continuity between every two prefabricated composite floor slab is effectively solved, and a transversesteel bar does not need to be additionally arranged between prefabricated bottom plates; and a triangular powerful frame is additionally arranged on the steel bar truss at the weak part of the composite floor slab to effectively improve the strength of the composite floor slab.
摘要：
The invention relates to the technical field of fiber lasers, in particular to a fiber laser with an efficient temperature control device. The fiber laser comprises a box body, a first mounting plateis arranged at the middle lower part of the inner wall of the box body; a refrigerating device is arranged at the middle lower part of the inner wall of the box body and is positioned right below thefirst mounting plate; the refrigerating device comprises a second mounting plate; a plurality of rectangular through holes distributed at equal intervals are formed in the surface of the second mounting plate, a semiconductor chilling plate is arranged in each rectangular through hole, a heat dissipation aluminum plate is bonded to the bottom of each semiconductor chilling plate, a rectangular through groove is formed in the position, close to the edge of the bottom, of the left side of the box body, and a heat dissipation device is movably connected into the rectangular through groove. According to the optical fiber laser with the efficient temperature control device, components installed on the first mounting plate can be refrigerated through the arranged semiconductor chilling plates, and heat generated by the semiconductor chilling plates can be blown out of the second heat dissipation holes to the outside through the first mute fan.
