Mining backfilling is restrained by relatively high filling cost.充填采矿由于充填成本较高而制约着其发展.High - water rapid - hardening backfilling with whole tailings is a new developed backfilling technology.全尾砂高水速凝充填技术是一项新近发展起来的充填技术.Its ...

v.回填（挖掘的洞穴）( backfill的现在分词 )，充填...

backfilling的音标：backfilling的英式发音音标为：['bækfɪlɪŋ]backfilling的美式发音音标为：['bækfɪlɪŋ]...