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- Water supplying pipe in front of the coal economizer should be installed with a stop valve and check valve for the factory using boiler of mother tube water supplying. 7采用母管制供水的电厂，进入每台锅炉省煤器前的给水支管均应装设截止阀与逆止阀。两阀应紧接，按水流方向逆止阀在前。
- The leakage of the coal economizer is one of the main factors influe ncing the normal operation of power station s boiler. 省煤器泄漏是影响电站锅炉正常运行的主要因素之一。
- Analysis for Reasons of Detonation Leakage of Boiler Coal Economizer 锅炉省煤器爆漏原因分析及预防
- Some Problems in Maintenance of Coal Economizer and Its Pipe Installation 省煤器的检修及其管道安装中的几个问题
- We need to replenish our stocks of coal. 我们需要再次补充煤的储备。
- She piled on more coal before the fire go out. 在火熄灭之前她又加上些煤。
- I add the coal on the flame continuously. 我不断朝火里添加煤炭。
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- Prohibition was laid on the export of coal. 禁止煤炭输出。
- He put a shovel of coal on to the fire. 他往火炉里加了一铲煤。
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- We have enough coal to see the winter out. 我们有足够的煤过冬。
- They eked out their coal by collecting firewood. 他们拣拾木柴以补充煤的不足。
- We had a big delivery of coal today. 今天我们收到大批订购的煤。
- Pile on more coal the fire is going out. 火快灭了，再加上些煤。
- What can we do with the bituminous coal? 这些烟煤可以用来做什么？
- A coal fell from the fire and burned the mat. 一块煤炭从火中掉出来，烧坏了地席。
- The country is rich in oil and coal. 这个国家石油和煤的资源丰富。
- The smoldering coal or ash of a dying fire. 余烬将要熄灭的火中的冒着烟的煤块或灰烬
- They were shoveling coal into a cart. 他们在把煤铲进手推车。
