目前，对于多脉冲激光打孔，往往都是采用平行平面腔而脉冲能量采用平均分配法。
At present, plane parallel resonator is often used in multipulse laser drilling with average distribution of pulse energy.
将水注入镜头的腔中时，会把平时平面的镜片变成凸出的半球。
Putting water into the lens' chamber turns the normally flat lens a convex hemisphere.
基于平面欧几里得图和抽象胞腔复形理论，提出了街道网矢量数据的渐进式表达模型。
A progressive representation model for street networks of vector data was presented based on the theory of plane Euclidean graph and abstract complex cell.
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