当应用程序深入使用这些时间函数时，更有效地使用这些与时间有关的函数，可以改进程序的整体性能。
When the application makes an intensive use of timing functions, a more efficient implementation of the timing routines can improve the overall performance of the program.
IMC的演变主要是与老化温度、老化时间有关，较厚的IMC不利于焊接性能的提高。
The evolution of IMCs is related to the aging temperature and aging time.
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