主回路中的蒸汽，不再同水一起循环，而是升腾起来。
Steam within the primary loop, now no longer circulating with the water, rises.
15小时50分钟随着主回路的水泵启动，循环水包围了堆芯。
15 hr 50 min the primary loop's pumps are turned on, which circulate water around the core.
强迫循环条件下，压水堆一回路主循环泵有效压头的损失随喷射泵阻力系数的增加而增加；
The loss of efficient head of circulation pump in the primary loop of PWR will increase with the increase of resistance coefficient of JetPump under forced circulation.
强迫循环条件下，压水堆一回路主循环泵有效压头的损失随喷射泵阻力系数的增加而增加；
The loss of efficient head of circulation pump in the primary loop of PWR will increase with the increase of resistance coefficient of JetPump under forced circulation.
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