已从200多名病人取样。
这项调查使用的是对中西部地区2000人的随机取样。
The survey used a random sample of two thousand people across the Midwest.
在漏斗数量有限的情况下，也能够对更多的废弃物进行取样。
It will also allow more litter to be sampled when using a limited number of funnels.
这些包括人工收集，使用诱饵吸引蚂蚁，地面垃圾取样，以及使用陷阱诱捕。
These include hand collecting, using baits to attract the ants, ground litter sampling, and the use of pitfall traps.
科学家们希望将这颗红色星球的一大块带回地球，进行所谓的取样返回任务。
Scientists want to bring a chunk of the red planet down to Earth on what's called a sample-return mission.
在20年的时间内，威廉姆斯和他的同事对北美西部的5000多名美洲印第安人的血液进行了取样。
Williams and his colleagues sampled the blood of over 5,000 American Indians in western North America during a twenty-year period.
许多人来信索取样品。
这是人类首次成功地无人往返取样。
科学家们也用钻孔的针头来采取样本。
不过要收取样品费和运费。
该研究小组在实验室中对小鼠肠组织取样。
Working in the laboratory, the research team took samples of intestinal tissue from mice.
未从母亲身上采取样本。
还可以指定收集数据的取样速率(图13)。
You can also customize the sampling rate for which data is collected (Figure 13).
一小时后从志愿者胃液中提取样本进行分析。
Samples of stomach fluid were taken from the volunteers an hour later and analysed.
基因取样使技术人员得以查明一种鱼的出生河流。
Genetic sampling allows technicians to ascertain a fish's birth stream.
用一些特殊的专孔方法从洞里挖掘岩石来提取样品。
Cores- samples of extracted rock from the holes using some special method of drilling.
通过这些强大的流，可以对表进行取样、联结和修改。
With the powerful concept of these flows, you can sample, join, and modify tables.
分析和取样方法是对食品进行检验和控制的必要基础。
The methods used for analysis and sampling are the necessary basis for food inspection and control.
这项研究是很有意思的，尽管它受到取样方法的限制。
The study is really fascinating to look at although it's limited by the sampling procedure.
他们同样可以在像小行星这样的近地物体的提取样本。
They could similarly sample near-Earth objects like asteroids.
i10u表示以10微秒的取样间隔执行硬件取样。
I 10u means to perform hardware sampling with 10 microseconds as the sample interval.
它每小时运行一次，这与HMC上一小时的取样速率一致。
It would run every hour, to correspond with my one hour sample rate on the HMCs.
但是Woodward更广泛的取样显示出了不同的结果。
But Woodward's more extensive sample size showed much different results.
头发和血液也被取样保存以便日后进行DNA鉴定。
Hair and blood were recorded to enable DNA identification at some later date.
只要北极熊倒下了，他们就能登陆，直接从北极熊的直肠采取样本。
Once a bear went down, they landed and collected a sample directly from its rectum.
只要北极熊倒下了，他们就能登陆，直接从北极熊的直肠采取样本。
Once a bear went down, they landed and collected a sample directly from its rectum.
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