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全局置顶 隐藏置顶帖 通告:全面下架“化学工业出版社”资源 凤舞九天 实名认证 2020-4-16 44482 loltootlol 2023-5-17 09:55
全局置顶 隐藏置顶帖 通告:即日起将关闭QQ登录 admin 实名认证 2020-7-25 03077 admin 2023-5-17 09:55
全局置顶 隐藏置顶帖 通告:严禁灌水、广告内容!违者封号/删除账号/封IP处理! 凤舞九天 实名认证 2018-10-23 53980 98侦察兵 2023-5-17 09:53
全局置顶 隐藏置顶帖 新型冠状病毒疫情实时跟踪!(汇集近10家主流媒体的数据) attach_img 鸟儿慢慢飞 2020-1-29 84473 柳暗花明 2020-3-18 09:19
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STANDARDS OF THE EXPANSION JOINT MANUFACTURERS ASSOCIATION  ...234 70z 2025-6-7 38543 石油图集 2025-6-15 03:29
ISO 6707-1 2020 Buildings and civil engineering works-Vocabulary  ...234 70z 2025-6-7 38529 牟dpfWrl 2025-6-14 20:21
MIL-V-29592 VALVE , A I R VENT , AUTOMAT I C , HYDRAUL I C  ...234 70z 2025-6-7 38503 征远 2025-6-14 19:31
MIL-G-82682 MILITARY SPECIFICATION  ...234 70z 2025-6-7 38512 云清心 2025-6-14 12:44
MIL-G-82682 GRAPHITE BILLETS, EXTRUDED (FOR HICH TEMPERATURE APPLICATION) attach_img  ...234 ml04 实名认证 2025-4-19 38910 hSEAFAI 2025-5-21 20:06
STANDARDS OF THE EXPANSION JOINT MANUFACTURERS ASSOCIATION.INC TENTH EDITION attach_img  ...234 ml04 实名认证 2025-4-19 38867 青岛暴力鸟 2025-5-21 19:15
ISO/IEC 29500-4 Part 4: Transitional Migration Features attach_img  ...234 ml04 实名认证 2025-4-19 38909 mute 2025-5-21 18:25
MIL-V-29592 attach_img  ...234 ml04 实名认证 2025-4-19 38952 国寰吴工 2025-5-21 16:45
ISO 6707-1 Buildings and civil engineering works-Vocabulary Part 1: General attach_img  ...234 ml04 实名认证 2025-4-19 38933 moen 2025-5-21 14:15
PC-A-610-CN 电子组件的可接受性 修订版J-2024年3月 attach_img  ...234 ml04 实名认证 2025-4-19 38942 QWERTYUIOP1 2025-5-21 13:25
ISO/TR 27912 Carbon dioxide capture-Carbon dioxide capture systems, technologi attach_img  ...234 ml04 实名认证 2025-4-19 38934 不可说 2025-5-21 12:35
ASME B31.8-2022 Gas Transmission and Distribution Piping Systems attach_img  ...234 ml04 实名认证 2025-4-19 38872 xti 2025-5-21 10:04
API579-2/ASME PTB-14-2023- 2nd Edition Fitness-For-Service Example Problems attach_img  ...234 ml04 实名认证 2025-4-19 38924 y0791003477 2025-5-21 09:14
HD 620 S2 Distribution cables with extruded insulation for rated voltages attach_img  ...234 ml04 实名认证 2025-4-19 38851 ywqu 2025-5-21 08:24
ISO/IEC 11578 Information technology-Open Systems Interconnection-Remote attach_img  ...234 ml04 实名认证 2025-4-19 38829 dushen2020 2025-5-21 07:33
API579-1/ASME FFS-1 FITNESS-FOR-SERVICE attach_img  ...234 ml04 实名认证 2025-4-19 38893 sunshine 2025-5-21 00:50
CSA W59:24 Welded steel construction  ...23 吾爱舞灵 2024-12-13 291057 Takeaction 2025-1-23 19:56
Special-purpose Rotating Equipment Repairs  ...234 衮伔 2024-12-12 381143 WAN 2025-1-19 20:46
ISO 16232-2007 道路车辆部件和系统的清洁度 (1-10中文版)  ...2 great 实名认证 2024-11-2 11914 luxin10708 2024-12-13 17:26
NFPA 400-2022 Hazardous Materials Code 危险品守则 危险品守则 盘古 2024-10-26 6693 敢为人先甘为人 2024-12-7 08:18
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