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Several WAAM review papers have been published by leaders in the field , covering state-of-the-art systems , design , usage , in-situ process monitoring , in-situ metrology and in-process control and sensing .
 manufacturing process: WAAM; concept or principle: state-of-the-art; engineering feature: design; concept or principle: in-situ; concept or principle: in-situ; application: sensing
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:
 manufacturing process: WAAM; concept or principle: state-of-the-art; engineering feature: design; concept or principle: in-situ; concept or principle: in-situ; application: sensing