然而，在那些已经具有特定的策略，来降低弯曲杆菌在活禽中的流行程度的国家，已观察到人类病例出现了类似减少。
However, in countries where specific strategies have been put in place to reduce the prevalence of Campylobacter in live poultry, a similar reduction in human cases is observed.
地球表面的弯曲度把微波的直线行程限制在48公里左右。
The curvature of the earth limits a microwave's line-of-sight path to about 48 km.
针对单弧度弯曲大变形无裂纹轴校直问题，根据广义预测控制理论，建立了多步校直行程预测算法。
However to the large deformation shaft without crack, general predictive theory has been applied to built up the multi-steps straightening stroke predictive algorithm.
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