What do these abbreviations mean curr vlf pen?

Without more context, it's impossible to know for sure what these abbreviations mean. They could stand for a variety of things depending on the subject matter.

Here are some possible interpretations:

Possible Meanings:

* CURR: Could stand for "current" or "currency."

* VLF: Could stand for "very low frequency" (often used in radio communications or electromagnetic fields) or "variable length field."

* PEN: Could stand for "penetration" or "pen."

To get a definitive answer, you need more context. For example:

* Where did you see these abbreviations? (A document, a website, a conversation?)

* What is the subject matter? (Finance, technology, science, etc.?)

Once you provide more context, I can help you decipher the meaning of these abbreviations.