degree of penetration; penetrance
Technical term used in fields such as physics, chemistry, and biology to quantify how deeply a substance or effect penetrates a medium.
We need to measure the degree of penetration of this membrane.
The higher the penetrance of the drug, the sooner the effect appears.
Compound of 浸透 (penetration, permeation) and 度 (degree). The exact historical derivation is uncertain, but the word follows a common pattern for forming technical measurement terms.