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Hauptbestandteil m -(e)s, -e
gen.	essential element; essential part; main component; key ingredient; chief constituent
busin.	principal component
chem.	principal ingredient; principal element; main constituent (chief/key/principal/major c.)
commun.	body of a book
econ.	basis; mass
health.	main constituent
industr.	primary constituent
life.sc.	major component; major constituent
mining.	chief component
Hauptbestandteile m
gen.	chief constituents; main constituents
econ.	chief ingredients
environ.	Main Component Element

Hauptbestandteil: 3 phrases in 3 subjects

Agriculture	1
Construction	1
General	1