Numerical model for balanced draft air and gas system for circulating double fluidized bed is established and simulative study on the dynamic characteristics of air gas system is made.

建立了循环双流化床锅炉平衡通风风烟系统的数学模型，并对风烟系统的动态特性作了仿真研究。

youdao

Property speciality and spinning effect of JF spinning double short apron draft were discussed.

探讨JF型细纱双短胶圈牵伸的性能特点及纺纱效果。

youdao

Coincidentally, on the day the writ was moved for the Mid Ulster by-election, the Northern Ireland Office published its draft bill on double jobbing and other potential changes to the political system here.

BBC: Promises easy to make in opposition

Washington prospect Anthony Rendon, the No. 6 overall pick in the 2011 draft, kept up his strong spring with a double and two RBIs.

WSJ: Strasburg strikes out 6, Nats and Mets tie in 10