by trial and error

We were given no instructions how to do the work, so we had to learn to do it by trial and error.

没有人指导我们如何干这项工作，我们只有反复尝试摸索着干。

Many drugs were found by trial and error.

很多药物都是通过反复试验才发现的。

He cannot carry a tune. Factorization of this equation by trial and error is not possible.

他不能够演奏这个调子。用试凑法对这个方程进行因式分解是不可能奏效的。

That means progress will be made only by trial and error.

这就是说，只有不断尝试并犯错之后，才能取得进步。

Learn by trial and error.

通过反复试验学习。

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.

Methods To select best chromatographic condition by trial and error, making changes in sorbent, developing agent.

方法通过改变层析条件吸附剂、展开剂、显色剂，反复实验，筛选出适宜的层析条件。

He learned technical skills by trial and error.

他通过不断摸索掌握技能.

Specific behaviour must be determined by trial and error.

特殊的行为必须是通过探索试验来决定.

trial She learned to cook by trial and error.

n.审讯；努力adj.试验的；审讯的她不断摸索学会了做饭。

You can learn how to use it properly by trial and error.

你可以通过反复试验来学习如何正确使用它。

These are issues that we're currently in the process of sorting out by trial and error.

这些问题，我们目前正在靠试错法寻找解决方案。

Determination of laser absorptivity of metal by numerical calculation technique and trial-and-error method

用数值计算技术和试错法确定金属材料表面对激光的吸收率

Children learn to use computer programs by trial and error.

孩子们通过反复摸索才学会运用计算机程序。

They also need to practise skills and learn by trial and error.

他们也需要锻炼技巧和通过反复试验来学习.

Assuming we have predicted G, we can solve for N by trial and error.

假定我们已经预测到G，就可以用试误法来解N。

It has been proved by trial and error modelling and field data processing that the idea of conjugate migration is right and proper.

通过理论模型的试算和实际资料的处理，证明了共轭思想是成功的。

We learn, in a sense, by trial and error.

从某种意义上说，我们通过反复试验来学习。

There isn't enough time to learn everything in life by trial and error.

人生实在没有足够的时间容我们凡事尝试，从失败中学习。

Nobody taught him and he actually learnt by himself through trial and error.

虽然没有人教，他摸索了一段时间，竟自学会了。

Thesis constructs ANN models to simulate land use changes by trial and error on comparing the methods of constructed ANN.

本文在比较分析了有关ANN设计的方法的基础上，通过反复试验构造了模拟土地利用变化的ANN模型。

In actual production, the process planning of gear blank relies on expert experiences and is optimized by trial and error.

实际生产中，齿轮坯的生产工艺大都凭借经验设计，然后反复实验确定可行方案。

The above general rules allow the isopachs to be drawn by trial and error.

有了上述的一般规律,即可采用试凑法来描绘等和线.

He learned to cook by trial and error.

他不断尝试学烹调。

What is tested by trial in this paper is using the discontinuity of thrust bearing shoe and then limiting the error action of protection by making characteristic quantities to restrict with each other.

本文尝试用油温的突变量来描述推力瓦的故障过程，并且用多种特征量相互制约来限制保护误动。

The general orientation and principles are already established, but we still have to work out specific rules and regulations by trial and error.

总的方向、原则有了，具体章法还要在试验中一步步立起来。

But much of this advice is broad and non-specific, leaving development teams to learn by trial and error.

但是大多数这种建议都太宽泛而且不具体，使得开发团队必须自己从尝试和错误中学习。

You need to learn what works by trial and error.

你必须要通过实验和错误去学习什么是管用的方法。

My progress has been spasmodic and interrupted by trial and error.

我的投资经历了试验和错误.

Many drugs were found by trial and error

很多药物都是通过反复试验才发现的。