test sample

基本解释

Now let's look at a test sample.
现在，让我们研究测试样本。
Make sure the test sample is big enough to draw conclusions from.
要保证测试样本足够大，足以支撑你的结论。
Mustapha modified the PCR test by adding a dye to the test sample.
幕斯塔法对PCR检测进行了修改，给检测样本增加了一个染剂。

By throwing all 14 initiators into a test sample, Dr Shivji can thus identify which shark species it contains.
ECONOMIST: DNA tracking
But it's just fine for Wal-Mart (also a major seller of the Center's test sample), where customers can just slide over to another section of the store to find Christmas gifts.
FORBES: Toy Scare Could Help Wal-Mart
Sample test question: would you ever leave 6 children under the age of 12 unattended?
FORBES: Confessions of the Best Nanny in the World