单词	sand seal
释义	sand seal 砂封,沙封
随便看	noncentered non centered non-centered non-centered conic non-center flexible brush noncentering non-centering non-centering telemotor noncentering valve noncentral non central non-central noncentral axis of mass non-central beta distribution non-central chi-squared distribution noncentral chisquare distribution noncentral chi square distribution noncentral chi-square distribution non-central chi-square distribution noncentral chi squre distribution noncentral chord non-central chord non-central cities non-central city non-central collision