When the fracture exists in the stratum, pressures in parallel direction falls much faster than that in vertical.
当地层中存在裂隙时，平行裂隙方向压力下降比垂直裂隙方向要快得多。
Fault is the main pathway of oil-gas migration in the vertical direction, and unconformity and carrier bed are the main ones of oil gas migration in the parallel direction.
断裂是油气进行垂向运移的主要通道而不整合面和输导层是油气进行侧向运移的主要通道。
The results showed that the gradient composites had obvious anisotropy, and the mechanical performance of parallel direction of gradient interface was better than that of perpendicular direction.
结果表明：梯度型复合材料具有明显的各向异性，其平行于梯度面的力学性能优于垂直于梯度面的力学性能。
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