做驗中, 點解有時要做對照實驗?
做驗中, 點解有時要做對照實驗?
做驗中, 點解有時要做對照實驗?
做驗中, 點解有時要做對照實驗?
做驗中, 點解有時要做對照實驗?
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做驗中, 點解有時要做對照實驗?
2008-07-18 5:12 pm
回答 (2)
2008-07-20 12:12 am
In biological experiments,we usually set up a Control (對照實驗) to compare its results with thise of the experimental set-up. A control is a set-up that is the same as the experimental set-up ,except that it does not contain the substance or condition under study.
參考: My biology book
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