单词	pit-head shed
释义	pit-head shed 井口棚
随便看	particle-number operator particle-number representation particle of fluid particle of hard alloy particle of impurity particle of second phase particle of speech particle optics particle optimization algorithm particle orbit particle orbit effect particle orbit theory particle or chip board particle organic carbon particle organic material particle organic materialpom particle organism organic fertilizer particle orientation particle orientation process particle-oriented paper particle packing particle packing density Particle padding particle-pair particle pair production