H字彙

H-iron
H-projection
H-trace

hachure
hammering
handbook
handsketch
hardening
hatched lines
hatching convention
HB（Brinell Hardness Number）
HDN（hdn, harden）
HDP（horizontal datum plane）
HD（hard drawn）
HD（hd, head）
heading（map direction）
headroom
heat treatment
heating element symbol
heel radius
helicoid
helicoidal surface
hem
hemisphere
hemmed edge
heptagon
heptahedron
herringbone gear
hexahedron
HEX（hex, hexagon）
highway type
hinge
hollow cylinder
honing
hook letter
hoop soring type compass
horn surface
HOR（horizontal）
hot-rolled steel
HP（horizontal plane）
HP（hp, horsepower）
HRB（Rockwell Hardness Number, scale B）
HRC（Rockwell Hardness Number, scale C）
HRP（horizontal reference plane）
HRS（hrs, hot-rolled steel）
HT TR（heat treatment）
hump
HV（Vickers Hardness Number）
hydrographic map
hyperbola
hyphen
hypocycloid
hypoid gear
hypotenuse
hypotrochoid
hypsography
H（hammering）

hairspring divider
hairspring type

half angle
half development
half section
Half section view
half size
half [inch] scale
half-cubic parabola

hand lead pointer
hand printing

hard Arkansas oilstone
hard drawn

head
head style

heavy broken line
heavy drive fit
heavy duty
heavy force and shrink fit
heavy line
heavy series
heavy-gage sheet metal

height
height direction
height of truncation
height overall

helical convolute
helical gear
helical spring

helix
helix angle

hexagon
hexagon socket screw

hexagonal head
hexagonal prism
hexagonal pyramid

hidden detail
hidden feature
hidden line
hidden outline
hidden point

high contrast
high limit

hill shading
hill shading by hachures

hip
hip roof

hole
hole center
hole circle
hole pattern
hole symbol

horizon
horizon line
horizon plane

horizontal
horizontal axis
horizontal control
horizontal coordinate plane
horizontal datum plane
horizontal direction
horizontal hole
horizontal line
horizontal plane
horizontal plane of projection
horizontal position
horizontal principal line
horizontal projection
horizontal reference plane
horizontal scale
horizontal section plane
horizontal stroke
horizontal system
horizontal trace
horizontal-frontal axis
horizontal-frontal [line]
horizontal-profile axis
horizontal-profile [line]

hyperbolic cylinder
hyperbolic paraboloid

hyperboloid
hyperboloid of revolution

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