B字彙

B & S gage（Brown & Sharpe gage）
B S F thread（British Standard Fine thread）

BAB（bab,Babbit）
background area
backward inclination
ball bearing
balloon
ballooning
balsa wood
barrel finishing
Barth key
baseline
basement plan
bathymetric chart
batter
BB(ball bearing)
BC(between centers)
BC(bolt circle)
beacon
bead weld
beam compass
bell-and-spigot joint
bending diagram
between center
beveled edge
BG(Birmingham gage)
Bhn(BH,Brinell hardness)
biconvex
bill of material
binding head
bird's eye perspective
bird's eye view
Birmingham wire gage
bisect
bisector
BL(base line)
blackened-in
blackening
blackface letter
blackness
blotter
blotting paper
blueing
blunt angle
body diagonal
boiler tube
boldface letter
bone center
bonus tolerance
bore
boss
bottleholder
bottoming tap
bounding line
BP(blueprint)
BR STD(British Standard)
brackets
Braddock-Rowe triangle
branch circuit
breadth
breakdown
breechblock thread
BRG (bearing)
bright steel
brightness
Bristol paper
bronze
BRZ (bronze)
BS(British Standard)
BSC(basic size)
BSI(British Standards Institution)
BSW(British Standard Whitworth thread)
buckle plate
buffing
building plot
built-in lead sharpener
buoy
burnishing
bushing
buttock lines
buttonhead bolt
buttress thread
BWG(Bwg,Birmingham Wire Gage)
BZ(bronze)

back cone
back cone angle
back elevation
back view
back weld

bar chart
bar graph

base
base angle
base circle
base edge
base face
base line
base of cone
base plane
base section
base surface
base-line dimensioning

basic angle method
basic angle tolerancing system
basic calculated size
basic chart
basic clearance
basic color
basic data
basic design
basic diameter method
basic dimension
basic drawing logic
basic form of thread
basic hole system
basic information
basic line
basic major diameter
basic shaft system
basic size
basic taper method
basic thread form
basic tolerance
basic weld symbol

bearing
bearing and slope
bearing angle
bearing plate
bearing surface

bend
bend allowance
bend line
bend plate
bend radius
bend relief

bent
bent plate

bevel
bevel face
bevel gear
bevel protractor
bevel weld

bilateral system of limits
bilateral tolerance
bilateral tolerance system

black indian ink
black-and-white chart
black-and-white diagram
black-and-white graph
black-and-white reproduction
black-line print

blade of pen
blade ruling pen

blank area
blank space

blind hole
blind tapped hole

block chart
block diagram
block form
block letter
block out
block plan
block supplementary

blue print
blue print apparatus
blue print paper
blue printing
blue printing machine

blueprint analysis
blueprint reading

bold
bold dot
bold line
bold type figure

bolt
bolt circle
bolt thread

border line
border pen

boring
boring mill

bottom edge of digit
bottom edge of letter
bottom surface
bottom tap
bottom view

boundary
boundary dimensions
boundary element
boundary line
boundary surface

bow compass
bow divider
bow instrument
bow pen
bow pencil
bow spacer（bow divider）

box construction
box-method

boxing
boxing method

brass
brass pipe
brass thread

break in the arrow
break line

brilliant line
brilliant point

British Association（B.A.）thread
British Standard Fine thread
British Standard pipe thread
British Standard wire gage
British Standards Institution

broaching
broaching machine

broken circle
broken line
broken view
broken-out section

Brown & Sharpe gage
brown print

brush
brush-stipple shading

butt hinge
butt joint
butt weld
butt-welding fitting

butterfly nut
butterfly valve

button head
button punched standing seam

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