Finally we do the predesign of the EM AE experimental system.
最后，本文还对电磁声发射实验进行了设计。
2
The protective breaking resistance design of the project shall be executed for predesign or trial design, which is not only opening up, but also practical.
工程抗断防护设计应进行预设计或试设计，既要有开拓性，又要有现实性。
3
It is suitable to calculate the quantities of subgrade protection and drainage project, especially in the draft design and predesign phase of the highway or railway.