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| English | Latvian |
| heavy goods vehicle traffic Traffic of large motor vehicles designed to carry heavy loads | smago kravas automašīnu satiksme |
| heavy metal A metal whose specific gravity is approximately 5.0 or higher | smagais metāls |
| heavy metal load The amount of stress put on an ecosystem by heavy metal pollution released into it | smago metālu iespaids (uz apkārtējo vidi) |
| Protocol to the 1979 Convention on Long-range Transboundary Air Pollution on Heavy Metals | gada Konvencijai par pārrobežu gaisa piesārņojumu lielos attālumos pievienotais Protokols par smagajiem metāliem |