排序方式: 共有52条查询结果,搜索用时 15 毫秒
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Crazydu*Repack 《电脑爱好者》2004,(9):25-25
从Windows 2000开始,无法访问网上邻居共享文件夹就成为一个经久不衰的问题。Windows XP发布后,问题稍有改善,但又引发了新的问题。各种解决方案,众说纷纭。有人说启用Guest帐户、有人说安装NetBEUI……下面笔者根据自己的经验来做一个小结:在网络连接正常权限允许的情况下,局域网中Windows 98/ 2000/ XP/2003用户如何访问Windows XP/2003的共享文件夹。 相似文献
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利用生物活性物质高效、专一的催化特性,通过生化反应中生成的复合物对包层折射率和半径的直接调制,提出了基于长周期光纤光栅的、可用于蛋白质等生物物质鉴别与分析的传感方案,并用数值计算方法对检测中所生成复合物薄膜层的折射率和厚度变化对耦合波长偏移和衰减的影响进行了仿真研究,为新型高灵敏度生物传感器的研发提供了理论依据。 相似文献
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Comparative study on evaluation of tendon force for welding distortion prediction in thin plate fabrication* 下载免费PDF全文
Tendon force is an essential concept to predict welding distortion such as longitudinal shrinkage and welding induced buckling in thin plate fabrication.In this study,three approaches with experimental,theoretical and computational analysis,are examined to evaluate the magnitude of tendon force.In detail,inherent deformation theory is introduced first,the theoretical analysis to obtain the inherent strain solution is also reviewed;and then analytical solution for tendon force is achieved.Also,the theory of FE analysis for welding is introduced and implemented in a computation to obtain the transient temperature distribution,plastic strain,residual stress and welding distortion in a bead-on-plate welded joint with 2.28 mm in thickness.The longitudinal displacement is employed to evaluate tendon force directly,and these computed inherent strain and inherent stress can also be employed to evaluate tendon force by integration approach later.All the evaluated magnitudes of tendon force have a good agreement with each other. 相似文献
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为制备低黏度的羧甲基纤维素钠(CMC),采用芬顿(Fenton)试剂对CMC进行降解,并对降解后的产物进行定量分析。在整个反应体系中,考查了反应时间、溶液浓度、温度、p H值以及V(H2O2)/V(Fe2+)的比值对CMC降解效果的影响。试验结果表明:Fenton试剂对CMC的降解效果非常显著。由正交试验得出最佳的降解工艺条件,即在3 g/L的CMC溶液2 L、反应温度50℃、p H值为3.5、V(H2O2)∶V(Fe2+)=3∶1(0.9 m L∶0.3 m L)、反应时间为30 min时,CMC降解率达到96.05%。对降解后产物的各项性能进行定量分析,结果均符合食品添加剂的各项理化指标。 相似文献
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戴光剑*nes 《电脑界(电脑高手)》2001,(1):107-108
人生总会有许多的起起伏伏、转转折折,这次高手创业的主角戴光剑便是如此。一个年轻的愣头小子,书生气的眼中透出一丝坚毅、几分执。其实他非常谦虚,据我们所了解,在他们城市里年仅22岁的他名气实在不小,许多的企业、部门和机关单位都找他开发过软件,为私人公司搞的数据系统就更是不胜枚举了。交谈到最后他说出了一句朴实却给我深深震撼的话:“人一辈子总有摔跤的时候,难道摔了我就不站起来?” 相似文献
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In order to detecting and tracking along the weld seam with rotating arc sensor in underwater welding,the highpressure water environment rotating arc welding hardware platform is established and welding experiments using rotating arc sensor is done.Different radius of rotating arc sensor is used.And the corresponding welding current and voltage is obtained,which is compared with the results of rotating arc sensor short-circuit process simulation model under high-pressure water environment established in this article.The results show that under high-pressure water environment,rotating arc radius should be optimized,otherwise the short-circuit-arcing cycle will transit to a short-circuit-arcing-abruption cycle,making the welding quality poor.At last the critical radius between the short-circuit-arcing cycle and short-circuit-arcing-abruption cycle under high-pressure water environment is obtained. 相似文献