near-bottom current 近底层流
Current incomes are at roughly the level of the late 1970s for those near the bottom of the income spectrum.
对于收入属于最底层的人们来说，现在的收入只相当于上世纪70年代晚期的水平。
For a time, surface and subsurface current are in opposite directions; flow is seaward at the surface and landward near the bottom.
在一个时期，表层和次表层的水流方向相反；表层水流向外海方向流动，靠近底层的水流则向陆地方向流动。
Field investigation of near-bottom boundary layer of tidal current has been conducted at two stations in the Heishijiao Hay.
对黑石礁湾两个测站进行了潮流海底边界层调查。
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