Counter sample的意思
"Counter sample" is a term that can be used in various contexts, but it generally refers to a sample or specimen that is taken for the purpose of comparison or verification. Here are a few examples of how it might be used in different fields:
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Quality Control: In manufacturing, a counter sample might be a product that is produced and tested against a known good sample to ensure that the production process is consistent and meets quality standards.
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Forensics: In forensic science, a counter sample could be a sample of known material (e.g., hair, fiber, or DNA) that is compared to a sample found at a crime scene to determine if they match.
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Medical Testing: In medical testing, a counter sample might be a second sample of blood, urine, or another bodily fluid that is taken from a patient to confirm the results of an initial sample.
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Environmental Science: In environmental science, a counter sample could be a sample of water, soil, or air that is taken from a control site (a site that is not expected to be contaminated) to compare against a sample taken from a site that is suspected of being contaminated.
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Art and Antiques: In the field of art and antiques, a counter sample might be a sample of a known authentic piece that is used to verify the authenticity of another piece that is suspected to be fake.
In each of these cases, the counter sample serves as a reference or control against which other samples can be compared to ensure their accuracy, quality, or authenticity.