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JT/T 1215-2018 锥形泥门 Conical bottom door2024-01-30

KS B1329-2017 Conical spring washers2023-10-13

DIN 906-2020 Internal drive pipe plugs – Conical thread2023-08-21

GB/T 9074.31-2017 组合件用锥形弹性垫圈 Conical spring washers for assemblies2023-08-13

GB/T 11185-2009色漆和清漆.弯曲试验(锥形轴)Paints and varnishes—Bend test(conical mandrel)2022-06-06

Reaction thrust of water jet for conical nozzles2020-07-08

Vertical transportation system of solid material for backfilling coal mining technology2020-06-12