A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
Server Error in '/' Application.
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.SqlClient.SqlException: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[SqlException (0x): A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)]
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +428
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +65
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +117
System.Data.SqlClient.SqlConnection.Open() +122
FCMS.DataProvider.SqlConnectionPool.Create() +38
FCMS.DataProvider.ObjectPool.GetObjectFromPool() +670
FCMS.DataProvider.SqlConnectionPool.BorrowConnection() +33
[Exception: 对像池取出连接对象失败]
FCMS.DataProvider.SqlConnectionPool.BorrowConnection() +107
FCMS.DataProvider.SqlDBManager.RunSql_Query(String sql) +44
FCMS.DataProvider.DBCenter.Run_SQL_Query(String Sql) +19
FengcheWeb.PageControllers.contentPageController.DoAction(String action, HttpRequest Request) +956
FengcheWeb.PageControllers.PageControllerFactory.ProcessMain(HttpRequest Request, HtmlTextWriter writer, Type source) +340
PUWords._Default.Render(HtmlTextWriter writer) +34
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27
System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99
System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1266
Version Information:&Microsoft .NET Framework Version:2.0.; ASP.NET Version:2.0.25的钢筋直径6.2米怎么弄圆-钢筋直径
&&&&【提要】本篇《25的钢筋直径6.2米怎么弄圆_》由66test小编特别为需要综合文库的朋友收集整理，仅供参考。
&&&&所属栏目：教育科学&&&&25的钢筋直径6.2怎么弄圆&&&&直径25的钢筋九米重量&&&&毎米钢筋的重量，可通过下列公式计算，适用于任何不同直径钢筋。&&&&一 重量等于直径乘直径乘0.017 d2＝XXX㎏/m&&&&二 1、W＝πr2×L×ɡ÷1/1000&&&&2、W＝π×d2/4×L×ɡ×1/1000＝πd2/4×L×ɡ×1/1000。&&&&式中：W——重量（公斤）&&&&d2——钢筋直径的平方；d（单位、毫米）&&&&π——圆周率：3.1416；&&&&r2——钢筋半径的平方；r（单位、毫米）&&&&L——长度，（单位、米）&&&&ɡ——比重，7.85克/厘米3&&&&二 1、W＝πr2×L×ɡ÷1/1000&&&&2、W＝π×d2/4×L×ɡ×1/1000＝πd2/4×L×ɡ×1/1000。&&&&式中：W——重量（公斤）&&&&d2——钢筋直径的平方；d（单位、毫米）&&&&π——圆周率：3.1416；&&&&r2——钢筋半径的平方；r（单位、毫米）&&&&L——长度，（单位、米）&&&&ɡ——比重，7.85克/厘米3&&&&【例】钢筋直径25九米重量：&&&&解：①W＝0.0.0×9＝3.8.71（㎏）。&&&&②W＝πr2×L×ɡ÷1/6×12.52×1×7.85×0.001×9＝3.85×9＝34.65（㎏）。&&&&③W＝π×D2/4×L×ɡ×1/6÷4×252×1×7.85×0.001×9&&&&＝0.×1×0.0.＝34.68（㎏）。&&&&答：直径25的钢筋九米重量35.68㎏。&&&&欢迎您转载分享：http://www.niubb.net/a//585311.html&&&&……
特别声明：怎样把钢筋折成圆圈我要批量生产钢筋是12的圆刚圆的直径是31厘米
浮云462356
要批量生产？那还不好办吗？你按你的要求，加工1个轮鼓，用机械与这个连接起来，你在买盘圆12的钢筋，呵呵绝对有这种钢筋，现在盘圆钢筋最大的就是12的，你找个懂机械设计的人，给你设计个整个的机械设备，那你的效率就会成倍的增长，你还省钢筋，直接增加利润...
买个弯曲机就可以了，方便合算，又简单。
有专门的弯曲机，还自己设计、制作设备，雷！
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