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research techniques (manufacturing (testing the material (. (.)), .,…
research techniques
manufacturing
.
testing the material
.
.
planning for feasibility
experimentation
material
metals
plastics
.
prototypes
working properties and physical properties
.
personal research
photos
buying the product
statistics
surveys
interviews
Internet research
.
.
websites
Reverse-engineering
.
news articles
.
.
Primary sources
Secondary sources
personal knowledge