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After removing the NaCl , porous Mg structure with porosity of 41 % and pore size of 1 mm was obtained .
 material: NaCl; machanical property: porous; material: Mg; machanical property: porosity; process parameter: pore size; manufacturing process: mm
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 material: NaCl; machanical property: porous; material: Mg; machanical property: porosity; process parameter: pore size; manufacturing process: mm