【计】 块分裂

incomplete right bundle branch block

left bundle branch block

hand plane with power-driven cutter block

内存中存储输入信息的区域\ninput area【计】;input block【计】;input region【计】

left posterior fascicular block 或left posterior hemiblock, LPH /left

Building Block

precast concrete building block (precast concrete product)

tactic block