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DIN EN ISO 15236-2-2017 鋼絲繩芯輸送帶第2部分：優(yōu)選帶型 Steel cord conveyor belts - Part 2: Preferred belt ty...2023-05-01

SJ/Z 2567-1985滑動(dòng)開(kāi)關(guān)系列型譜Preferred series for slide switches2022-06-15

GB/T 19925-2005液壓傳動(dòng) 隔離式充氣蓄能器優(yōu)先選擇的液壓油口Hydraulic fluid power—Gas-loaded accumulators wi...2022-06-13

GB/T 18123-2000音頻、視頻及視聽(tīng)系統視頻系統Y/C連接器的應用和優(yōu)選電配接值Audio,video and audiovisual system...2022-06-09

SJ/Z 863-1980振動(dòng)、碰撞、沖擊、恒加速度試驗設備系列型譜Preferred spectrum of values for vibration,shock and ...2022-06-06

Exploration of Water Resource and Multiple Model for Water Resource Development in Karst Areas with 2020-07-08

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