We are still using the same testing techniques invented 20-30 years ago, some of which are crafted methods or heuristics rather than good engineering methods.

我们仍然使用同样试验技术发明了20 - 30年前，一些是被制作的方法或启发法而不是好工程学方法。

youdao

We are still using the same testing techniques invented 20-30 years ago, some of which are crafted methods or heuristics rather than good engineering methods.

我们仍然使用同样试验技术发明了20 - 30年前，一些是被制作的方法或启发法而不是好工程学方法。

youdao