他们也不知道为什么这额外的大脑活动总是发生在大脑左半球，至少第一晚的深睡眠阶段是如此。
They also do not know why the extra brain activity, at least during the first phase of deep sleep, is always on the left hemisphere.
结果发现，第一晚的睡眠潜伏期延长，睡眠效率下降，深睡期和快动眼睡眠期减少。
Results: The first night recordings showed longer sleep latency, decreased sleep efficiency and shorter delta and REM sleep.
晚侏罗世-早白垩世为鄯深构造三叠系油藏的第三个成藏期，现在鄯科1井所产轻质油就是该期注入。
The third stage, lasting from Late Jurassic to Early Cretaceous, has resulted in accumulation of light oil, forming a productivity in Shanke-1.
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