管程

中间件分数据库、远程过程调用、面向消息、对象请求代理、事务处理管程（TPM）或专用（PM）等类。

The middleware is divided into some classes , such as database , remote procedure call ( RPC ), oriented message , object request agent , transaction processing management ( TPM ) or special PM .

通过对自支撑矩形管束换热器进行的换热器整体传热与流阻性能研究，得到了管程和壳程Nu数关联式。

The rectangle tube bundle heat exchanger with self-support of tube bundle is proposed , which is investigated about the heat transfer and flow resistance by experiment . The relational expression of heat transfer coefficient and velocity has been obtained .

管程介质温差对管箱法兰密封性能的影响

Study on influence of heat-exchanger channel flange seal performance subjected to high temperature difference

在布管定型模块中，按照确保壳程流体流动均匀、且换热器壳体的内径较小、管程壳程间换热良好且节省材料的原则，根据设计计算参数建立了自动布管定型系统；

Considering the factors such as uniform flowing of the fluid , smaller inner radius of the shell , the well heat exchanging effect and saving materials , the pipe setting module is developed based on the designing data .