1. We can also constrain the pilot field with a prototype to achieve the same result. ����Ҳ����ʹ��һ��ԭ����Լ����ʻԱ�ֶΣ��Ӷ��ﵽͬ���Ľ����
2. A technique in ensuring proper reception of the function for updates is to develop a prototype for testing. Ϊ��֤�����ܹ��ʵ��ؽ��ܸ��£�һ�ּ����ֶξ��ǿ���һ������ԭ�͡�
3. Prototype trial, to participate in field trials and processing electrical failure, propose product improvement measures. �������ƣ��μ��ֳ����鲢�����������ϣ������Ʒ�Ľ���ʩ��