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неразъёмный корпус stresses
automat.	solid housing (напр., подшипника)
combust.	unsplit casing
construct.	monolithic housing; solid housing
el.	box frame (РЭА)
tech.	one-piece casing; box frame; solid housing design (MichaelBurov); one-piece body design (MichaelBurov)

неразъёмный корпус: 6 phrases in 3 subjects

Oil and gas technology	1
Technology	3
Thermal engineering	2