background luminance meter
background luminance sensor
Background field and Background value
a comparison between China and the west
A Comparison of Stator Core Pressing System
A Comparison of Two Cotton Harvesters
abundance biomass comparison method
accumulation comparison
acidity comparison
化学汽相沉积法(CVD)
化学气相沉积
化学气相沉积(CVD)
化学气相沉积法
酸度比较
actuality of cold forging comparison
ad hoc of the socialist system with Chinese the Soviet New Economic Policy common comparison
alignment-free comparison
almost diagonal system for comparison