查询词典 valid operation

Note from me: the citation above is no longer valid.

错的这么多，不会是你写的吧。

Or, in other words, classical mechanics cannot be valid if the velocities approach that of light.

或者换句话说，经典力学在速度接近光速时就不再适用了。

The results indicate that the extracted face features are valid and the design of classifier is sound and efficient.

实验结果表明，使用相关算法提取的人脸特征是有效的，分类器的设计也是合理的。

In this case, you must have a valid certificate to clear the customs.

您的护照过期了，没有有效证件您不能过关。

You passport has been overdue and you can't clear the customs without valid certificate.

您的护照过期了，没有有效证件您不能过关。

"After much debate and evaluation, it became clear that the current format offers students more convenient and flexible opportunities to test when and where they choose, while still providing score users with valid predictors of test takers' preparedness for graduate school study," he added.

"在无数的争论于评估后，这项决定在当前的格局下渐渐明朗，要报考研究生的学生有更加方便和灵活的机会选择在何时何地参加考试。对于有备而来的学生而言考试分数还是最有效的工具。"他补充说。

After much debate and evaluation, it became clear that the current format offers students more convenient and flexible opportunities to test when and where they choose, while still providing score users with valid predictors of test takers' preparedness for graduate school study.

经过我们的反复讨论和论证，我们发现现行的GRE考试模式无论从时间和地点上对考生都是非常方便和灵活的，同时现行GRE考试也能为研究生院的录取官们提供一个非常客观的分数标准，从而使他们充分了解申请人对未来研究生院学习的准备程度。

Let me clear the decks of some extraneous details to concentrate on Marx's thesis, which if valid, would be of considerable interest.

让我拿掉一些无关的细节来集中于马克思的论题，这一论题如果是正确的，那么它将相当引人关注。

It is shown that closed ball model is a valid model for topological relations and iS simpler than 4-set model.

结果表明，对定性空间推理来说，闭球模型比4-交集模型更简单有效。

Lake Arenal is open to fishing throughout the year, but is a closed season in most inland waters, and a valid Costa Rican fishing license is required for freshwater fishing in the country.

arenal湖一年四季均可钓鱼，但多数是一个封闭的内陆水域的季节，哥斯达黎加和有效所需淡水渔业捕捞许可证的国家。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了