单词：sample pretreatment
sample pretreatment的用法和样例：
例句
- Puffing and trapping technique was used in the sample pretreatment.用吹扫捕集法作试样预处理。
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1. To explain where the applicant has got the information about the vacancy. For example, he can learn it from his friends, or in the advertisement, or in some papers, or he just wants to try his luck. SAMPLE: Having noticed the enclosed advertisemen
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A: What is that plastic cup for? B: Your doctor has requested a urine sample. A: Am I supposed to pee into the cup? B: We want what we call a clean sample. Urinate a drop or so into the toilet, and then stop the flow and urinate into the cup. A: Then
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