It is essentially equal to internal energy for condensed systems, but when you look in the books sometimes they will use this term.

它与内能是相同的,在凝聚体系中，在你看书时有时你会发现,它们会这样使用。

麻省理工公开课 - 固态化学导论课程节选

The internal mid-term elections of the European Parliament took up the first couple of days of the first plenary session of 2012.

BBC: Democracy Live site links

These are owners of roofing, landscaping and metal-stamping firms too wrapped up in the grind to focus on internal controls and long-term strategy.

FORBES: Rebuilding America

These leases tend to have long-term durations and the internal cash flow growth for these REITs is likely to be lower than those in other sectors.

FORBES: Move up http://i.forbesimg.com t Move down