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powder metallurgy造句
31. The molybdenum alloy reinforced by lanthana particles with the sizes of nanometer and micron was prepared by powder metallurgy. 32. And also has the very broad application in the powder metallurgy aspect. 33. Other industrial products are mainly coal, zirconia, powder metallurgy, corundum and so on. 34. It is quite common that some misunderstanding in significant digits or improper data processing are observed in the papers on powder metallurgy. 35. The process of preparation foam aluminum by powder metallurgy method was studied. 36. And common pantograph slider prepared by powder metallurgy technology usually causes serious abrasion of the conducting wire. 37. Powder metallurgy and magnetic material technology and equipment:Injection forming, pressing, fritting, breaking, polishing, sizing, drying, quenching, reducing, charring, mould and shotting etc. 38. Pure metals are typically produced using Vacuum Induction Melting, E - beam Melting or Powder Metallurgy Processes. 39. This design introduces the automobile engine blocks by powder metallurgy technic. 40. In this paper, the fabrication of silver - carbon fiber composite by powder metallurgy has been studied.