這廁所是哪個天才設計的?XD
ISO 898-1:2013 - Mechanical properties of fasteners made of carbon steel and alloy steel -- Part 1: ISO 898-1:2013 specifies mechanical and physical properties of bolts, screws and studs made of carbon steel and alloy steel when tested at an ambient temperature range of 10 C to 35 C. Fasteners (the term used when bolts, screws and studs are considered a...
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