Abstract: Embodiments of the present disclosure provide a datum selection method for minimizing hole position errors in group hole machining of large components, comprising: 1) determining a type of a computer numerical control (CNC) machine tool and establishing a topological structure of the CNC machine tool; 2) establishing a theoretical postural model of a tool center point during a motion; 3) establishing a hole position error model; 4) establishing an average error model of hole positions in group hole machining; and 5) obtaining a machining datum for group holes of corresponding components. For the skeleton and skinned group hole machining of aircraft components, different principles of datum selection are provided respectively, which can effectively improve the positional accuracy of the skeleton or skinned group hole machining, at the same time provides a more scientific and reasonable approach for the datum selection in group hole machining of large components.

Abstract: A deep sea energy integration system based on a floating wind turbine and a current energy device, being of a power generation structure having wind turbines with a Spar platform as a foundation and integrating vertical axis current energy device, and having a Spar-type floating wind power generation system and a current energy power generation system. The Spar-type floating wind power generation system is simple in structure and high in stability, is suitable for middle and far sea areas. By combining an offshore wind turbine with the current energy power generation device to share the Spar platform, an mooring line, a voltage transformation device, and a power transmission device, the power generation performance of the system is improved. An outer support of the current energy power generation system is a cylindrical shape, thereby reducing wave loads, utilizing the current energy to the maximum extent.

Abstract: Disclosed are a protein encoded by a gene having a nucleotide sequence represented by any of SEQ ID NOs: 1 to 65 or a fragment thereof, an antibody recognizing the protein or antigen-binding fragment thereof, and a polynucleotide having a sequence comprising at least 12 consecutive nucleotides of a nucleotide sequence represented by any of SEQ ID NOs: 1 to 65 or a nucleotide sequence complementary thereto. The gene and the protein of the invention is useful for diagnosing and treating cancer.