Usage patterns
〈事〉の原理を理解するto understand the principle behind something
It's difficult to understand the principle behind an engine.
原理に基づくto be based on a principle
This device is designed based on principles of physics.
原理を応用するto apply a principle
This technology applies the principle of light reflection.
原理を発見するto discover a principle
The scientists discovered a new principle.
原理が成り立つfor a principle to hold (be valid)
In this case, that principle doesn't hold.
Expressions· 8
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