Since 1987, late rice is planted in extensive area. The meteorological factors influencing the variation of grain yield per unit area from 1987 on differ obviously with those before 1987.
1987年大面积种植单季晚稻以来，影响粮食单位面积产量变化的气象条件与1987年之前有着明显的差异。
The intensity and range of extensive area of plastic points, which centralizes in the upper soil layers, of foundation reinforced by short piles is similar with those of natural foundation.
短桩加固地基与天然地基具有相似的塑性开展强度及范围，且集中在上部土层。
The intensity and range of extensive area of plastic points, which centralizes in the upper soil layers, of foundation reinforced by short piles is similar with those of natural foundation.
短桩加固地基与天然地基具有相似的塑性开展强度及范围，且集中在上部土层。
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