Internal force or stress within an object or structure; figuratively, the internal strength or influence within an organization or country.
地質学では、地殻内にたまった内力が地震を引き起こすことがある。
In geology, accumulated internal stress within the crust can sometimes trigger earthquakes.
会社を変えるには外部からの投資だけでなく、社内の内力を高めることが大切だ。
To change a company, it's important not only to have outside investment but also to strengthen internal capabilities.
実験で材料にかかる内力の分布を測定した。
We measured the distribution of internal stress applied to the material in the experiment.