blood distribution determination

例句：

1. 1. The doctor determined the cause of the patient's illness.
   医生确定了病人疾病的起因。
2. 2. Blood distribution determination is crucial for understanding the human body's internal workings.
   血液分布确定对于理解人体内部运作至关重要。
3. 3. The study aimed to determine the optimal blood flow rate in the brain during sleep.
   该研究旨在确定睡眠期间大脑最佳血流速率。