• At layer boundaries, that is, a place where different materials with different elastic parameters come into contact with one another, components of the waves are reflected and return to the surface.

    地层交界处(指具有不同弹性参数物质相交地带),部分震波反射地表

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  • The patching coat consists of the primary layer made of polyether polyurethane and the surface layer made of elastic polyurethane.

    修补的涂层聚醚聚氨酯底层弹性聚氨酯面层组合而成。

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  • A charging member is provided having a support, a conductive elastic layer formed on the support and a surface layer formed on the conductive elastic layer.

    提供一种充电构件,其具有支承体、形成支承体上的导电性弹性形成于该导电性弹性层上的表面层

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  • A charging member is provided having a support, a conductive elastic layer formed on the support and a surface layer formed on the conductive elastic layer.

    提供一种充电构件,其具有支承体、形成支承体上的导电性弹性形成于该导电性弹性层上的表面层

    youdao

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