wedge block with two inclined planes
block and block [= chocka-block
conditions of wedge caulking and wedge refunding
Cross-wedge rolling with multi wedge
Multi-wedge cross wedge rolling
2 atrioventricular block and complete atrioventricular block
BDCB Block Device Control Block
Block 36 and Block 38 in Oman
block by block relaxation operator
block by block transfer
block gage (gage block) (slip gage)