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For a given weld , the size and aspect ratio of the columnar grains in the longitudinal and horizontal planes are shown to decrease with distance from the weld interface .
 engineering feature: weld; engineering feature: aspect ratio; machanical property: columnar grains; engineering feature: weld; concept or principle: interface
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:
 engineering feature: weld; engineering feature: aspect ratio; machanical property: columnar grains; engineering feature: weld; concept or principle: interface