Or you can have a pebble bed reactor which is a continuous flow of pebbles that go in and out of the reactor over time to make up the excess activity.
或者，你们能有一个球床实验反应堆，那是有球体不断的出入，反应堆，随着时间，用来补充剩余反应性。
The following items were investigated: the effective power of haemostasis, operating time, stayearlier out-of-bed activity and median postoperative hospital.
并从止血有效率、手术时间、术后下床活动时间及术后住院天数几方面进行对比分析。
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