覆砂铁型铸造工艺
sand-coated iron mold casting method
铁型覆砂
sand-lined permanent mould
sand-faced iron mould
permanent mould with sand facing
Sand lined metal
Metal model with sand lining
铁型覆砂铸造
sand faced-iron mould casting
Sand-lined metal mould casting
金属型覆砂
Sand faced permanent mold
Moulding Sand Covering on the Permanent Mold
MgO包覆铁粉芯
MgO coated iron powder cores
包覆型聚合物固定相
Polymer encapsulated stationary phase
广义的逆冲推覆型
overthrust type sensu lato