The test that we saw last time saying, well, to check if something is a gradient field if it's conservative, 0 we just have to compute the curl and check whether it's zero.

由上次的测试可知，如果一个东西是保守的，要确定是不是梯度，我们只需要计算旋度，查看它是否是。

youdao

Also correct damage boundary curve to avoid damage test, reduce over package design caused by conservative design, make package design approach distribution reality.

用它可以修正破损边界曲线，避免破坏性实验，减少由于保守设计造成的过度包装。

youdao

The test results show that this technology system that combines highly efficient use of rainfall and conservative farming technologies has greatly improved the yield and saved the irrigation water.

试验示范结果表明，实施此项自然降水高效利用与保护性耕作相结合的综合机械化技术，具有显著的增产、节水效果。

youdao

It is the first electoral test for Conservative leader Mr Cameron since he became leader last December.

BBC: NEWS | UK | UK Politics | Tories are 'satisfied' with gains

His fixing skills found their greatest test when he served as Conservative chairman for two years up to the 1997 election.

BBC: Sir Brian Mawhinney

He said the company had sought to be conservative in its rollout by limiting the test to women with risk factors and recommending that it be administered in conjunction with genetic counseling.

WSJ: New Questions on Cutting-Edge Prenatal Tests