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GB/T 2879-2024_Chinese: Hydraulic fluid power - Cylinders - Dimensions and tolerances of housings for single-acting piston and rod seals in reciprocating applications (Chinese: 液压传动 液压缸 往复运动活塞和活塞杆单向密封圈沟槽的尺寸和公差)
GB/T 12552-2023_Chinese: Maximal safety depths for commercial diving (Chinese: 产业潜水最大安全深度)
GB/T 43710-2025_Chinese: Requirements for auditing of scientific data security (Chinese: 科学数据安全审计要求)
English versions: GB/T 19520
3-2025_Chinese: Optics and photonics - Test methods for telescopic systems - Part 3: Telescopic sights (Chinese: 光学和光子学 望远镜系统试验方法 第3部分：瞄准望远镜)
GB/T 23144-2023 Chinese PDF (GB/T23144-2023) GB/T 150.3-2024 GB/T 2879-2024_Chinese: Hydraulic fluid powerGB T 23144 2023_Chinese: Paper and board Determination of bending stiffness General principles for two point, three point and four point methods (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 23144 2023
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