Initial patients needed more health education than recurrent ones (P<0. 01);
初发病人比复发病人健康需求程度高(P<0.01);
Because P and S waves travel at different but fairly constant speeds, the interval between their arrivals increases in proportion to the distance from the earthquake focus, or initial rupture point.
由于 P 波和 S 波以不同但相当恒定的速度传播,它们到达的间隔与到震源或初始破裂点的距离成比例地增加。
The initial concepts, developed by artist Alex Jaeger, were called the Pod Attack Walker, or P.
画家亚历克斯·耶格设计的最初概念被称为攻击舱步行机,简称P。
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