Packet capture mechanism is introduced,and then lipcap and socket methods are adopted,the development and implement of network packet capture is discussed,and pick-up way of the header of TCP/IP is given,in order to analyse and deal with t.

On the basis of IPv6\'s message format,the header format and extension headers of IPv6 are analyzed,its addressing scheme and address auto-configuration process are described,the format difference between IPv6 and IPv4 is presented.

The actual categories of things and their classification in dictionaries often result in inexactness due to the fact that the radicals of dictionaries are limited in numbers and the forms of Chinese written characters are developed with times going on.

The development of radicals has experienced three stages so far: from Shuowen Jiezi (origin of Chinese characters) to Zihui, Zihui to Kangxi Dictionary, and Kangxi Dictionary to the present.

The radicals are special etymons.

Chinese characters radical compiling method has experienced many variations.

The paper introduces the header of intake works for water source with high-silt content―non-all-flow filter system with automatic backwash and its design.

“Well head laid down” is a study result by Xushui Water Affairs Bureau through ten years research, which solves the problems of “elephant nose” existed in the construction of motorpumped-well heads.