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The width and height fluctuation reduced while adding the low power laser , both the standard deviation decreased by more than 50％ when the laser power was 400 W. The coefficient of materials utilization was up to 91.12 % , and increased by more than 15 % while using L-M based AM to fabricate thin-wall parts with a proper laser power .
 process parameter: power; enabling technology: laser; process characterization: standard deviation; process parameter: laser power; concept or principle: materials; manufacturing process: AM; manufacturing process: fabricate; process parameter: laser power
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:
 process parameter: power; enabling technology: laser; process characterization: standard deviation; process parameter: laser power; concept or principle: materials; manufacturing process: AM; manufacturing process: fabricate; process parameter: laser power