Series a includes steam service for warming up before the main line is opened, and for balancingpressure where the lines are of limited volume.
系列a包括用于在主管道开启前进行加温的蒸汽应用场合，或在流量有限的管道上平衡压力。
2
The reliable working of balancingpressure pneumatic controlling doors lies on the driving effect of its link machine, so the rational parameters of link machine need to be designed.
矿用气控无压风门的可靠运行取决于连杆机构的受力传动效果，因此有必要对连杆机构的参数进行合理地设计。
3
Maybe they're trying to find a balancing point psychologically, to put some pressure on plaintiff, whatever they're trying to do, we are prepared to deal with it.