underflow
/ˈʌndəfləʊ/noun
1
- an undercurrent暗流。
1.1
- a horizontal flow of water through the ground, especially one underneath a river bed（尤指河床下）潜流, 底流。
2
- mass noun Computing the generation of a number that is too small to be represented in the device meant to store it【计算机】下溢。