子字段

The data capture mainly gathers the data from the network. Protocol analysis can analyse every segment of the data packet according to protocol standard. Data recover can recover all the data of the application layer of the TCP connection. IP spoofing can construct all kinds of packets and realize the network attack. Real-time interruption can interrupt the TCP connection of Both sides of communication as the third party. Fire wall can realize network access control. Then the system can protect the network information safety from many aspects.

数据捕获主要完成从网络采集数据的功能；分析还原包括协议分析和数据还原两部分内容，协议分析可以对捕获到的数据包按照网络协议规范分别进行各协议字段分析，数据还原功能可以将每条TCP连接中传输的所有应用数据进行重新组合，还原出原来数据的内容；IP欺骗指构造各种功能的数据包，实现网络攻击；实时阻断指第三方实时阻断通信双方的TCP连接，禁止他们进行数据通信；防火墙主要实现网络访问控制，保护内部子网的功能。

He Type indicates the type of contents of the subobject.

ype字段描述子对象的类型。当前定义值如下

The Length contains the total length of the subobject in bytes,including the L, Type and Length fields.

该子对象的总长度，包含L位，Type和Length字段。

In a field on a form, subform, or datasheet, find one instance of the value that you want records to contain in order to be included in the filter′s results.

在窗体、子窗体或数据表上的字段中，查找要包含在记录中的值的一个实例，目的是将该实例包含在筛选的结果中。

Index any subform fields that are used for criteria .

对所有用于条件的子窗体字段编制索引。

Extra fields can decrease subform performance.

多余的字段将降低子窗体的性能。

Right-click in the field in the form, subform, or datasheet you′re filtering , and then in the Filter For box on the shortcut menu, type the value.

在要进行筛选的窗体、子窗体或数据表中单击相应的字段，然后在快捷菜单上的&筛选目标&框中键入所需的值。

Extra fields can decrease subreport performance.

多余的字段会降低子报表的性能。

You can create similar fields for substeps or other sequences that you want to be numbered with letters, Roman numerals, or some other sequence.

可以为子步骤或其他序列创建类似的字段，比如用字母，罗马数字，或其他序列。

Five means are offered to extend the data model: setting aside reserved-fields, adding new fields, adding new sub-tableles, and adding new toplevel structure, and adding new drop-down pick-list.

数据模型扩展有5种途径：保留预留字段、直接在原有表中加入新的字段、增加新的子表、扩展全新的顶级结构、增加新的下拉列表选项。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。