The time of electric cauterization is 5 sec . Divide the experimental teeth of A and B group into four smaller group separately , each group to each gear correspondence .
将A、B两组动物的实验牙又各自分为四个小组，分别与电流强度档位相对应。
The time of electric cauterization is 5 sec . Divide the experimental teeth of A and B group into four smaller group separately , each group to each gear correspondence .
将A、B两组动物的实验牙又各自分为四个小组，分别与电流强度档位相对应。
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