low-grade protogensis vulcanization copper mine
high-low-low temperature
high-low-low temperature process
LLWL (low-low water level)
Low copper and high sulfur
low-copper-value region
Low-low satellite to satellite tracking mode
Low-Low Satellite-to-Satellite Tracking
low-low water level switch
Medium-Low-Low Temperature
mid low low temperature shift
mid low low temperature shift process
middle low low temperature” shift process
middle-low-low shift process
middle-low-low temperature shift
mid-low-low temperature shift process