在考虑晶体的压电性和各向异性基础上，从声的波动理论出发，对叉指换能器在液体-压电晶片界面上兰姆波的激发理论及其性质进行了研究。

To solve these problems, the properties of Lamb wave excited by interdigital transducer in the piezoelectric substrate covered by liquid were studied based on its piezoelectricity and anisotropy.

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它消除了由于液体流动引起的各向异性，克服了溶剂挥发以及可能出现的外溢染料对操作人员的环境的危害。

Because it eliminates the liquid flow of anisotropy, overcome the solvent evaporation and the possibility of spills dye in the operation of environmental hazards.

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干燥岩石各向异性很弱，液体促进了饱和岩石各向异性的增强。

The anisotropy of dry rocks is very small, while it is enhanced by the fluids.

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