near field area的意思|示意

At head area of the reservoir: the maximum gravity change is near Xiangxi. Monitoring the variation of gravity field and further study should continue in the future.

库首地区：最大重力变化区域在香溪附近，蓄水后的重力场变化需要继续监视和深入研究。

The flow field parameter distribution can be affected more in upper stream, especially near the leading edge area while the Mach number distribution of the upstream blade surface is affected little.

对上游进口段，特别是靠近叶片前缘区域流场参数分布有较大影响，但对于上游叶片表面马赫数影响不大。

The helicopter crashed in a field near a residential area in east Aurora and became engulfed in flames.

直升飞机坠毁在Aurora市东部一块居民区附近，然后迅速被燃起的大火吞没。