主要结果为：(1)初夏东北冷涡活动显著异常与上游乌拉尔山附近和下游日本附近的持续性异常环流相对应。
It is shown that: (1) the anomalous cold vortex activity in Northeast China in the early summer is quite in concert with persistent circulation anomalies near the Ural Mountains and Japan.
大多数胎头位置异常为持续性枕横位和枕后位，可以试产；
Majority fetus head position unusually is persistent occipitoposterior position and persistent occipitotransverse position, can trying the delivery;
结果表明：前11项旋转主分量的主要高荷载中心，与持续异常的高频数中心或其邻近区域大都基本吻合；候平均环流异常的持续性略高于马尔柯夫过程。
The results show that the localities of high-loading centers of the first 11 RPCs basically coincide with those of the high frequency regions where the persistent anomalies occur.
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