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English thesaurus
gas alarm system
sec.sys.	GAS (MichaelBurov)

gas : 435 phrases in 24 subjects

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Chemistry	50
Coal	2
Construction	204
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Energy industry	20
Engineering	4
Environment	60
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General	15
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Mechanic engineering	2
Obsolete / dated	3
Soil science	3
Technology	15
Transport	18
Ventilation	1
Welding	1