English to Russian Tech/Engineering Agriculture Grain Silo

Bridging in silos and hoppers is a result of friction on the inner walls slowing the rate of flow and restricting the material from moving freely.

What is bridging in a silo?
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Bridging is the name given to the self-created arch that develops just above the outlet of a bulk material silo or hopper as it empties.

Clearing bridging

TIA!