trial error

Many drugs were found by trial and error

很多药物都是通过反复试验才发现的。

Popper also compares the method of trial and error with dialectics and criticizes Marxist dialectics wrongly.

为了推广试错法,波普尔进一步把试错法与辩证法进行比较,对马克思主义辩证法进行了错误的批判.

But engineering a crop takes a lot of trial and error.

但是对于基因工程庄稼已做了大量的反复试验.

Through trial and error we are gradually learning how together to create new realities.

通过尝试和失误,我们逐渐了解如何才能共同创造新世界.

The process parameters were usually determined in production by trial and error method.

筒形件强力旋压中各工艺参数在生产中常用试旋的方法确定.

She feels that raising her children has been a matter of trial and error.

她感到抚养孩子就像是摸着石头过河。

It was largely a matter of trial and error.

这主要是个反复实验的问题。

A trial invalid because of basic prejudicial error in procedure.

他们采取了一种反复试验的程序.

The entire , including thinking activities, trial and error processes, and states of, was faithfully recorded.

每首儿歌,从有了主题, 到最后完成,其间所经过的状况及思考活动, 包括尝试错误的过程, 都有详细的记录.

They didn't know how to put in a central heating system, but they managed it by trial and error.

他们不知道怎样安装集中供暖设备, 但是经过反复试验终于安装好了.