bead roll的相关资料：
临近单词
beadx
bead
beaded equal side outlet elbow
bead-chain cystourethrography
bead-treated lightweight soil
Bead-string-bead phenomenon
beaded eccentric reducing socket
beaded silica-alumina catalyst
Beads of perspiration oozed out.
beadspace solid phase microextraction
BEAD Beginning Extended Area Descriptor
