Because of the working environment which is abominable in this system the sum check should be added which is based on the CRC check on the MAC layer of CAN in order to ulteriorly improve the reliability of the communication of the system .

u7531u4e8eu644au94fau673au5de5u4f5cu73afu5883u6076u52a3uff0cu4e3au4e86u63d0u9ad8u7cfbu7edfu901au8bafu7684u53efu9760u6027uff0cu5728CANu7684MACu5c42u5df2u5177u6709CRCu6821u9a8cu7684u57fau7840u4e0auff0cu589eu52a0u4e00u7ea7 u6c42 u548cu53d6u6a21 u6821u9a8cu63aau65bdu3002

By analyze the project feature the new operation location feature and the Transfer requirement to sum up how to improve the project and the check point need special attention during the transfer process .

u4eceu9879u76eeu81eau8eabu7684u7279u70b9u51fau53d1uff0cu7ed3u5408u65b0u8fd0u8425u5730u70b9u7684u7279u70b9u548cu8f6cu79fbu8fd9u4e00 u9879u76eeu8981u6c42uff0cu5206u6790u5982u4f55u5bf9u9879u76eeu8fdbu884cu4f18u5316uff0cu5728u9879u76eeu4f18u5316u7684u8fc7u7a0bu4e2du9700u8981u7279u522bu6ce8u610fu7684u4e00u4e9b u63a7u5236u70b9u3002

T he sum in invoice which I listed is purchase price Pls check it and confirm it whether need any modifications or not if needs minus it in per cent of which price reply it as soon as possible .

u6211u73b0u5728u5217u51fau6765u7684u53d1u7968u4e0au7684 u91d1u989du662fu8d2du5165u4ef7uff0cu60a8 u770bu770bu662fu5426u8981u505au4e9bu4feeu6539uff1fu4feeu6539u7684u8bddu8981u6309u90a3u4e2au4ef7u683cu7684u767eu5206u4e4bu591au5c11u6765u51cfuff1fu8bf7u5c3du5febu56deu590du3002

Some error checking method commonly used in GPS data communication are analyzed in this paper such as sum check and Cyclic Redundancy Check detailed calculation realization is also given in C language .

u672cu6587u9488u5bf9GPSu6570u636eu901au8bafu4e2du76eeu524du5e38u7528u7684u6821u9a8c u548c u6821u9a8cu4ee5u53cau5faau73afu5197u4f59u6821u9a8cuff08CRCu6821u9a8cuff09uff0cu4eceu6821u9a8cu539fu7406u5165u624buff0cu5177u4f53u7ed9u51fau5176u8ba1u7b97u65b9u6cd5u548cCu8bedu8a00u5b9eu73b0u3002

The micro-computer simulates data link of CAN bus and adds the sum check in lengthways in application which may lower the cost of the hardware and improve the reliability of data transmission .

u7531u5355u7247u673au901au8fc7u8f6fu4ef6u6a21u62dfCANu603bu7ebfu7684u6570u636eu94feu8defu5c42uff0cu5e76u5728u5e94u7528u5c42u4e0au589eu52a0u4e86u7eb5u5411 u6821u9a8c u548cuff0cu4f7fu7cfbu7edfu5728u63d0u9ad8u6570u636eu4f20u8f93u7684u53efu9760u6027u7684u57fau7840u4e0au964du4f4eu4e86u786cu4ef6u6210u672cu3002

This text mainly is to sum up check approach clinical application and prospect of colon CT imaging .

u672cu6587u4e3bu8981u5c31u7ed3u80a0CTu6210u50cfu7684 u68c0u67e5u65b9u6cd5u3001u4e34u5e8au5e94u7528u4ee5u53cau5176u524du666fu5c55u671bu4f5cu4e00 u7efcu8ff0u3002

After the authorized mission is completed leaders need to sum up experiences and lessons check the finished work to help the grantees improve their abilities enlarge their knowledge and experiences .

u6388u6743u4efbu52a1u5b8cu6210u540euff0cu8fd8u8981 u603bu7ed3u7ecfu9a8cu6559u8baduff0c u6838u67e5u5de5u4f5cuff0cu5e2eu52a9u88abu6388u6743u8005u63d0u9ad8u80fdu529buff0cu589eu957fu77e5u8bc6u548cu7ecfu9a8cu3002