Instantly he knew that I had contracted giardia; no sample was needed.

他立刻知道我患了贾第鞭毛虫病，不需要对大便化验。

youdao

No sample preparation is necessary when using the Model 8009 Resistivity Chamber.

使用8009型电阻率测试盒时不需要进行样品准备工作。

youdao

No sample analysis is acceptable unless the requirements of system suitability have been met.

除非达到了系统适应性要求，否则样品的分析结果都是不能接受（不可信）的。

youdao

This is very important,which is why I am doing it: "If we want to know how fast a human being can run, then it is no use to average out the speed of a "good sample" of the population; it is far better to collect Olympic gold medal winners and see how well they can do.

这话非常重要，是我作这个研究的原因：,“如果想知道人类最快能跑多快，那从好的样本中测出平均数是“,没用的;,而应该收集田径类奥运冠军的信息,看他们能跑多快。

哈佛公开课 - 幸福课课程节选

The simple and inexpensive devices require minimal training to use, practically no sample preparation, and no electricity or additional equipment to process a sample.

UNESCO: House | United Nations Educational, Scientific and Cultural Organization

The length of the reference path is such that if no sample is present, the two daughter beams will be as perfectly in phase when they meet as they were when they were separated.

ECONOMIST: Microscopy

But there is no national sample of students who took both tests, so Pearson created its own theoretical sample.

WSJ: New York City Gifted-and-Talented Program's Math Is Questioned