with资源列表

[国外标准] DIN 2464 Parallel pin with internal thread, hardened NB The nominal length L is inclusive the rounde

[国外标准] BS A 363-2000 Bolts, with MJ threads, made of heat-resistant nickel-based alloy, strength class1 550

[国外标准] BS 6282-1-1982 —evices with moving parts for the prevention of contamination of water by backflow— P

[国外标准] JIS F2026-1980 Fairleads with Horizontal Rollers