英文關鍵字
analysis
analyzing
assistant
biochemistry
biologist
biology
black
chemical
chemist
chemistry
close
closeup
conducting
control
ecology
equipment
examining
experiment
expert
expertise
fuel
future
impurities
innovations
lab
laboratory
liquid
material
nature
oil
product
production
quality
raw
reaction
reflection
research
researcher
sample
science
scientific
scientist
sediments
source
study
studying
substance
test
testing
tube