Valsts valodas centra izstrādātie vides zinātņu, zemes zinātņu un fiziskās ģeogrāfijas termini

Konteksts: [..] Portland cement is a mixture of clinker and gypsum, with clinker comprising about 95-97% of the total weight of the cement (95% clinker is a common default value). Many countries may allow a small (1-5%) addition of inert or cementitious extenders. Some production data for 'portland cement' may include blended cements. [..]
Avots: Good Practice Guidance and Uncertainty Management in National Greenhouse Gas Inventories