英文關鍵字
accuracy
accurate
background
box
calibrate
calibration
chemistry
chrome
closeup
concept
equipment
grams
group
handle
industry
instrument
kilogram
lab
laboratory
many
mass
measure
measurement
metal
metric
metrology
objects
pharmacy
pound
precision
row
scale
science
set
shiny
small
standard
steel
test
tool
weigh
weight
white
work