1169
The larger the distance between the wire tip and the surface of the base metal , the higher the wire feed speed required to achieve bridging transfer .
 concept or principle: surface; material: base metal; process parameter: feed; concept or principle: bridging
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: surface, base metal, feed, bridging 
Answer:
 concept or principle: surface; material: base metal; process parameter: feed; concept or principle: bridging