The major pay bed is low permeable ultra dense sandstone. Its permeability and pore throat texture are very sensitive to the net pressure of overlying strata.
主要产层为低渗透超致密砂岩，其渗透率和孔喉结构对上覆地层净压力很敏感。
In dense multipath environments, IR-UWB (impulse Radio-Ultra Wideband) signals suffer from severe time dispersion which distorts the impulse wave.
脉冲超宽带(IR - UWB)信号在密集多径环境中存在严重的时间弥散，会产生波形失真。
Differing from the long pulse laser the ultra short laser will deposit its energy on the surface of the solid target in very short time and produce solid dense plasmas.
超短脉冲激光照射固体靶时可将其能量在极短的时间内沉积在靶表面一个极小的空间范围内，在固体靶表面产生固体密度的等离子体。
At the center is a dense cluster of ultra-sensitive vision cells.
中间密集着超灵敏视觉细胞。
At the center is a dense cluster of ultra-sensitive vision cells. Outside this central area, the cells rapidly become more sparse.
在中心部分分布着密集的强敏感视觉细胞，而在中心部分以外的区域，光感细胞的分布明显稀疏了许多。
At the center is a dense cluster of ultra-sensitive vision cells. Outside this central area, the cells rapidly become more sparse.
在中心部分分布着密集的强敏感视觉细胞，而在中心部分以外的区域，光感细胞的分布明显稀疏了许多。
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