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рыхлая порода stresses
construct.	terrain inconsistant
geol.	roche ébouleuse; roche non cimentée; roche non consolidée; roche pulvérulente; terrain peu solide; terrain spongieux
met.	roche fissile
mining.	formation meuble; terrain ébouleux
nat.res.	dépôt non consolidé
tech.	roche friable; roche pourrie; terrain meuble; terre meuble; roche meuble; terrain mou
рыхлые породы
geol.	formations tendres

рыхлая порода: 15 phrases in 5 subjects

Construction	1
Geology	5
Jargon	1
Mining	6
Technology	2