The density and the height of alveolar bone of each abutment was measured and analyzed statistically by using a dental radiographic analysis software.
运用牙科图像分析处理软件对每一基牙的根周骨高度和骨密度进行测量并进行统汁学分析。
The lag distance of abutment pressure behind working face increases, but the convergence coefficient of vertical stress doesn't change obviously with the increase of mining height.
分层开采与综放开采工作面滞后支承压力变化规律是，随着采高的增大，工作面滞后支承力的距离加大，垂直应力集中系数差别不大。
The washing water height in front of the abutment has the opposite tendency, with the high washing water height in the downstream and the low washing water height in the upstream.
斜交桥桥墩前冲高和壅水随着桥墩位置的不同而有所变化，一般均表现出上游桥墩前壅水高，下游桥墩前壅水低；
The washing water height in front of the abutment has the opposite tendency, with the high washing water height in the downstream and the low washing water height in the upstream.
斜交桥桥墩前冲高和壅水随着桥墩位置的不同而有所变化，一般均表现出上游桥墩前壅水高，下游桥墩前壅水低；
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