o forming 弯成 o 形 o ing 弯成 o 形 o
c copper 无氧高导电性铜 obm process obm 底吹氧转炉法 occlusion 吸留 octagon bar 八角型钢 octagons 八角型钢 octahedral borax 八面体硼砂 octahedral plane 八面体面 odd side 假箱 off analysis 成分不合格 off cast 废铸件 off gas 废气 off iron 不合格生铁 off size 尺寸偏差 offset 不一致 offset yield stress 条件屈服极限 oil and whiting test 渗油刷白探裂法 oil ash attack 燃油灰分腐蚀 oil ash corrosion 燃油灰分腐蚀 oil bath 油浴 oil burner 油烧嘴 oil chalk test 渗油刷白探裂法 oil coke 固体石油 oil cooling 油冷 oil diffusion pump 油扩散泵 oil drawing 油回火 oil furnace 燃油炉 oil gas 石油气 oil gas burner 油气烧嘴 oil hardening 油淬火 oil hardening steel 油淬钢 oil hydraulic press 油压机 oil impregnation 浸油 oil pressure 油压力 oil quenching 油淬火 oil quenching steel 油淬钢 oil sand 油砂 oil tempering 油回火 oil toughening 油浸韧化 oiling 注油 oiling machine 加油机 old metal 废金属 olivenite 橄榄铜矿 oliver 脚踏锤 oliver
