| English | Russian |
| backlog of firm orders | портфель твёрдых заказов (backlog of firm orders can be one of the better indicators of the level of business to be anticipated, but it has to be evaluated carefully Alex_Odeychuk) |
| backlog of orders | портфель невыполненных заказов |
| backlog of unfilled orders | невыполненные заказы |
| backlog order | невыполненный заказ |