Q235B的知识精选

“Q235B”可以造什么句,Q235B造句
1、AStudyonSideDefectsofHotRolledQ235BandQ345BStripSteels;2、WeldingApplicationofAutoSubmergedArcWeldingTechniqueintheBoilerandthePressureVesselTubeBody(Q235B,δ=6mm)3、Thesurfacedefectonmediumandheav...
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