 |
| |||
| подготовительные, внутренние услуги (The services downstream are the ones that consume the upstream service. In particular, they depend on the upstream service. So the front-end is downstream to the back-end because it depends on the back-end. The back-end can exist meaningfully without the front-end, but the front-end doesn't make sense without the back-end. AllaR) | |||
| upstream services: 4 短语, 2 学科 |
| 库页岛 | 3 |
| 石油/石油 | 1 |