The energy-saving results of these units can be further improved by widening the regulating range of the extraction pressure and by using tow-stage heating of district-heating return water.
扩大供热抽汽压力调节范围及采用热网回冰的两级加热，可进一步提高该型机组的节能效益。
Modern society may have come full circle: if oil becomes scarce we may have to return to earlier forms of heating and travel.
现代社会也许恢复原状了：如果石油变得稀少，我们可能又回到从前取暖和旅行的方式了。
The key to the use of this technique lies in selecting appropriate solvents, a certain basicity and time enough for return flow in heating.
使用这种方法的关键在于选择合适的溶剂、足够的碱浓度及加热回流时间。
"Returning to 2008 funding levels... would mean forcing 3.1 million families nationwide to return to deciding between heating and eating," Markey said.
回顾2008年的资金储备水平…这将意味着全国3.1万户家庭将不得不做出“是挨冻还是挨饿”的艰难选择。
The design and lectotype of circulating pump, automatic return water switch valve, expansion tank and atmospheric connection pipe in atmospheric hot water heating boiler room are discussed.
对常压热水供热锅炉房的循环泵、回水自动启闭阀、膨胀水箱、大气连通管的设计选型进行了探讨。
The advantages of forced circulation and indirect heating are lowered steam costs through return of condensate to boilers, lower liquor volumes, and greater uniformity of cooking.
强制循环和直接加热的方式的优点是通过回用冷水使耗汽量，耗水量降低、并使蒸煮更加均匀。
A method to inspect the leakage of return water of heating water in oil tank is introduced.
介绍了一种储油罐加热盘管泄漏锅炉回水检测技术，给出了其在实际应用中的特定工艺规程。
The problem how to discharge air in the double tube underside feed and underside return flow heating system is solved by improvement of system design.
并通过改进系统设计较好地解决了下供下回式热水供暖系统排放空气的问题。
The problem how to discharge air in the double tube underside feed and underside return flow heating system is solved by improvement of system design.
并通过改进系统设计较好地解决了下供下回式热水供暖系统排放空气的问题。
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