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| Subject | English | Russian |
| gen. | collection main | главный коллектор (In collection systems, a sewer to which branch and submain sewers are tributary. Also called a trunk sewer (q.v.). In plumbing, the public sewer to which a building service is connected. Alexander Demidov) |
| Makarov. | collection of small corrie glaciers having a broadly curved margin and resembling a horseshoe, located in the corries around the wall of the main cirque | группа небольших каровых ледников, расположенных в виде подковы в карах по периферии главного цирка |
| libr. | main collection | основной книжный фонд |
| progr. | main collections traits | основные трейты коллекций (ssn) |
| O&G | Open Drains Main Collection Transfer Pump | Насос главной сборной ёмкости системы открытого дренажа (Dzhem) |