1. during bicellular stage, quadracellular stage and multicellular stage, content of DNA increase slowly, and reach the peak at pear-shaped embryonic stage keep high level at mature embryonic stage. �ڶ�ϸ���ߡ���ϸ���ߡ���ϸ����ʱ��DNA������������������������֯�ķ�����DNA�ĺ�����������ʱ�ڴﵽ�߷壻�����ߵ�DNA�����������½�������ά�ֽϸ�ˮƽ��
2. Stage - An individual shooting challenge. Each stage shall be timed and scored separately, to determine final stage results. ��-һ�������������ս��ÿһ�ر���ֿ�������ʱ����÷��Ծ������ijɼ���
3. The failure process of fiber concrete is: elastic stage, crack stage, crack development stage and fracturation stage. ��Ӧ����ά���������ѹ��̰��������ԽΡ����ѽΡ��ѷ췢չ�Ρ����ѽΡ�
4. In this study, the imaging features of kidney were analyzed according to the stages of the disease, that is the pyretogenesis stage, shock stage, oliguria stage, and diuretic stage. ���ķ���������Ӱ��ı����Ѫ�Ȼ����ڷ����ڡ��ݿ��ڡ������ڡ�������������ı�Ͳ���Ĺ�ϵ��
5. In terms of the life cycle, an enterprise may experience the following stages: introduction stage, growth stage, maturity stage and decline stage. ��ҵ֮��˥�ɸŷ�Ϊ�����ڡ��ɳ��ڡ������ڡ�˥���ڡ�