实验结果表明：PVN是脑内镇痛的主要核团之一，其作用通过PAG实现，也可通过PVN—脊髓背角直接投射的途径。
The results suggest that PVN is one of the major intrabraih nuclei participating in analgesia, it plays its role via PAG of its direct projection to the dorsal horn.
爆裂的气泡把一团团的颗粒投射到床层上部的空间中去。
Bursting bubbles of gas project agglomerates of particles into the space above the bed.
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