Such as operation program, selection of earth pressure, wall-back grouting, rectification of shield machine, which are used to reduce the effect of construction on environment, are analyzed in detail.
详细分析了掘进模式、土压力选择、壁后注浆、盾构纠偏等施工控制手段，用来减小盾构施工对周边环境的影响。
Selection methods of back pressure turbine according to after-heat are introduced. An example is given to show economic advantages of differential pressure power generation using heating steam.
介绍了根据余热量来选择背压汽轮机的原则方法，并以一个实例数据说明供热蒸汽差压发电在经济效益上的优越性。
The key of calculation and selection of the valve is to select the correct flow value and the differential pressure value between the valve front and back for calculation.
在阀径计算和选型时关键在于正确选取用于计算的流量值和阀前后差压。
The key of calculation and selection of the valve is to select the correct now value and the differential pressure value between the valve front and back for calculation.
在阀径计算和选型时关键在于正确选取用于计算的流量值和阀前后差压。
The key of calculation and selection of the valve is to select the correct now value and the differential pressure value between the valve front and back for calculation.
在阀径计算和选型时关键在于正确选取用于计算的流量值和阀前后差压。
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