叶片具两面有鳞的，全缘的鳞片，或浅裂的。
Leaf blade with both surfaces scaly, scales entire, or lobed.
最后，通过在裂尖前方引人一快变化区，本文得到了一个在裂尖周围应力和速度全连续的渐近解。
Finally, with the introduction of a fast varying zone ahead of the crack tip, a solution with fully continuous stress and velocity fields is obtained.
根据全三维水力压裂模型，建立了水力压裂施工过程中裂缝、盖层、底层以及裂缝附近地层中三维温度分布的数学模型。
Based on the full 3-d hydraulic fracturing model, a model of 3-d temperature distribution in fracture and adjacent area during fracturing is established.
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