Many drugs were found by trial and error.

很多药物都是通过反复试验才发现的。

柯林斯例句

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.

《简明英汉词典》

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.

辞典例句

He learned technical skills by trial and error.

他通过不断摸索掌握技能.

辞典例句

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.

辞典例句

The design mix of concrete is determined by trial and error.

设计混凝土配合比确定试验和错误.

互联网

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

我的投资经历了试验和错误.

互联网

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.

互联网

By trial and error, we determine that a desirable threshold level is 0.3.

通过实验和误差分析, 令人满意的阈值是0.3.

互联网

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.

互联网

SCIENCE proceeds by trial and error.

科学在不断的实验和错误中前进.

互联网