最后，广告是一个试错过程。

In the end, advertising is a trial-and-error process.

youdao

平面应变测试，然后通过有限元模拟，材料的应变率依赖性确定的试错过程，使实验和预测FLD0关联。

A plane strain test is then simulated by FEM, and the material's strain rate dependency is determined in a trial-and-error process so that the experimental and the predicted FLD0 correlate.

youdao