blockers阻断剂blockn.街区；木块；石块；大楼；一组；阻塞(物)；障碍(物)v.阻塞block signal system闭塞信号系统block macromolecule嵌段高分子block suballocation块再分配block frame address块帧地址blocking impression雏形锻模,预锻模膛blockading boundary封锁边界block dement method块体元法block mining system分区开采法block- type pilot块状导频blocking resistance阻塞电阻