Incoherent Low-ash Coal 不粘结低灰煤
low-ash-fusing-point coal 低灰熔点煤
high-low-low temperature 中低低
high-low-low temperature process 中低低
LLWL (low-low water level) 低低水位
low ash combustion 低尘燃烧器
low coal bed 低煤层
low coal group 下组煤
Low Coal Rank 甲烷风化带; 低煤阶
Low-ash 低灰分
low-ash fuel 低灰分燃料
Low-coal 极薄煤层
Low-low satellite to satellite tracking mode 低低跟踪模式
Low-Low Satellite-to-Satellite Tracking 低低卫卫跟踪
low-low water level switch 低-低水位开关
mean low low water 平均特低水位; 平均较低低潮位
Medium-Low-Low Temperature 中-低-低; 中低低
mid low low temperature shift 中、低、低变换
mid low low temperature shift process NHD溶剂; 中低低变换工艺