请描述iPhone部分元件的制造过程。
Describe the manufacturing process for some of the components in an iPhone.
该软件模拟实际保护装置，可以对整套保护或其中部分元件进行验证。
This software can simulate real protection equipment, and it can also validate the whole or portion of the system.
它指出了减少非线性误差的方向，并为部分元件参数的设计提供了依据。
This paper points out the direction of reducing nonlinear error and offers the basis for design of partial components parameters.
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