牙根潜没(Submerged-Root)是通过埋存牙根、减缓牙槽脊吸收,保持牙槽骨丰满度,为全口义齿提供良好依托的一种手术。
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submerged root 沉水根
Compared with submerged irrigation, the growth of root, accumulation of above-ground dry matter, grain yield and water use efficiency were decreased significantly under dry cultivation.
旱种抑制水稻根系生长和地上部干物质积累，产量和水分利用率比淹水灌溉显著降低。
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