Because of the fast cooling of flowing medium, the hydrogen cracking occurs easily under in-service welding.
在役焊接过程中，管内流动介质的快速冷却，易使接头出现氢致裂纹。
The fast cooling technology of steam turbine is the process that the cooling medium is used to accelerate the temperature reduction of cylinder and rotor after the shutdown of turbogenerator.
汽轮机快速冷却技术是在汽轮机组停运后，向汽轮机内部通以适量的较低温度的冷却介质，进行强迫对流换热，加快汽缸和转子温降速度的过程。
The valve core of the thermostatic expansion valve realizes the effects of stably adjusting cooling medium and fast reducing temperature.
本发明的热力膨胀阀的阀芯达到了兼顾稳定调节冷媒和快速降温的效果。
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