How to pronounce the nasal voiced ng in Japanese?

When nasal voiced ng is pronounced, the root of the tongue is close to the tongue flap, and the oral passage is closed, so that the turbid gas flows out of the nasal cavity first, and then the obstruction is lifted, so that the airflow turns to the oral cavity.

When pseudonyms appear in words and at the end of words, they are usually voiced, such as:

Science (science)

Nail (nail)

Key (key)

Meaning (meaning)

Smell (smell)

Appliance (appliance)

Shadow (shadow)

Coke (burnt paste)

Qiqi (Go)

Afternoon (afternoon)

Realize (realize).