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AS 1742.14-2014 AMD.1-2019 Manual of Uniform Traffic Control Devices - Part 14: Traffic Signals2023-06-13

GA 289-2009警用服飾.彈簧卡扣Accessories for police uniform—Spring clasp2022-06-14

GA 349-2001警服材料底領(lǐng)呢Material for police uniform--Under collar felt2022-06-14

GA 351-2001警服材料帽飾帶Material for police uniform--Decoration ribbon on cap2022-06-10

吊橋方程的動(dòng)力學(xué)性態(tài)2020-08-30

Water Wave Scattering by an Elastic Thin Vertical Plate Submerged in Finite Depth Water2020-07-08

Digital Coal Mine Integrated Automation System Based on ControlNet2020-06-12