One of them is piecewise continuous argument delay differential equation, simply called EPCA.

其中第一类为分段连续的时滞微分方程，简称为epca。

youdao

"We need to see this the actual law passed by Congress, this EPCA, Electronic Privacy Communications Act made much more stronger, brought up to date.

VOA: standard.2010.06.22

But a 1990 amendment to the EPCA, passed in the wake of the Exxon Valdez oil spill, eased these requirements.

FORBES: Will Obama Pull The Trigger On The Strategic Petroleum Reserve?

This was done even though Congress delegated that responsibility solely to another agency, the National Traffic Safety Administration (NHSTA), through a separate statute, the Energy Policy Conservation Act (EPCA).

FORBES: A Pivotal Court Challenge: America vs. the EPA

This plan ignores the fact that the CAA provides no authority for fuel economy regulation, and that the EPCA specifically prohibits states from adopting laws or regulations related to fuel economy.

FORBES: A Pivotal Court Challenge: America vs. the EPA