noun
bubble nucleus
Technical term in physics and engineering for the initial microscopic cavity or seed from which a bubble forms in a liquid, often in cavitation or boiling contexts.
キャビテーションは、液体中の気泡核が成長することで発生する。
Cavitation occurs when bubble nuclei in a liquid grow.
超音波洗浄では、気泡核の振動が汚れを除去する。
In ultrasonic cleaning, the oscillation of bubble nuclei removes dirt.
キャビテーション is the phenomenon of cavity formation; 気泡核 is the microscopic nucleus that initiates it.
Compound of 気泡 (bubble) and 核 (nucleus). The exact historical derivation is uncertain, but the term follows standard scientific naming conventions.