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机械工程

Construction site with multiple yellow excavators and surrounding nature
YukihiroY

Yukihiro

Construction site at night with machinery and workers
@sakuwo390サ

サクヲ

Overhead view of a factory interior showcasing complex piping and machinery
@20230909o

oc

Interior view of a steam locomotive control panel
@meme87_xm

meme87_x

Construction site featuring a drilling rig and heavy machinery
mumei ksmm

mumei ksm

View from beneath an aircraft inside a hangar showcasing the fuselage and wings
RyotaR

Ryota

Close-up of an old machine showing metal components and pipes
erikoe

eriko

Detailed and intricate structure of a mechanical component in black and white
erikoe

eriko

Yellow excavator working at a construction site with a pile of white gravel
YuzurigimaY

Yuzurigima

Construction site with drilling machines and yellow columns
@cizucu77T

TakaBo-

Interior of a factory with gauges and valves
RYUURIR

RYUURI

Construction site featuring steel framework and cranes
YuzurigimaY

Yuzurigima

A construction site with a pile of rubble and part of heavy machinery
YuzurigimaY

Yuzurigima

Construction site with heavy machinery demolishing a building and piles of rubble
YuzurigimaY

Yuzurigima