base metal
【化学】金属管（金属管），热处理
metal tube (metal pipe) heat treatment
暂无补充释义。
相关词条
frame made of pressed metal
earth engenders metal
TAPPING metal or other material [= screw-threading]
road metal paving (crushed-stone pavement)
metal conditioner
fused masses (fused mass, molten metal)
pig-iron mixer (hot-metal mixer)