For example, Thorium Dust can be separated into Thorium and Dust, then translators only need to cope with Thorium and Dust once, since other items like Thorium Ingot and Uranium Dust can be formed by re-using Thorium and Uranium.
This will be greatly helpful to translators, as it reduces a lot of repeating work.

Unfortunately that's not really how localisation works - the unlocalised naming system is semi-automated by Forge, i.e. tile.block_name.name or item.item.name.name, so every item has to have a full localised name that can't be broken up.