设计师将模型保存为PCF格式以便3D打印。

The designer saved the model in ___PCF format for 3D printing.

开发者将源代码转换为可移植的PCF格式以便在不同平台上运行。

Developers convert the source code into a ___PCF for cross-platform execution.

这家工厂专门从事印刷电路板PCF的生产。

This factory specializes in ___PCF of printed circuit boards.