1. For data transfer to begin, the source and destination applications inform the operating systems that a connection will be initiated. �����ϴ���Ҫ��ʼʱ����Դ��Ŀ�ĵص�Ӧ�ó�ʽ֪ͨ��ҵϵͳ����һ�����ӽ���ʼ��
2. Without the operating system, none of the application programs on your computer system can run; in fact, the computer would not function. ���û�в���ϵͳ���������������κ�Ӧ�ó��������У���ʵ�ϣ��������ʧȥ���á�
3. Friends in the door, to introduce a motor vehicle standards, including operating systems, communication systems, network management, etc. �����ţ�����ҽ���һ�������ı�����������ϵͳ��ͨ��ϵͳ����������ȡ�
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adj.
1. involved in a kind of operation
2. being in effect or operation
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OPERATING INCOME ҵ������;
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