Hold down Cmd + Opt + click on the triangle icon will collapse or expand all level layer groups.

按下Cmd和Opt键的同时击这个三角形符号，可以折叠或展开所有层级的群组文件夹。

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Through deducing the Green's function in a three level layer soil by complex image method, application of this method is clarified.

通过运用等值复数镜像法求出水平三层土壤中的格林函数，阐述等值复数镜像法的应用。

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Commonly speaking, security services on the higher layer protect applications, security services on the lower level layer protect communication medium.

一般来讲，高层的安全服务用来保护某个应用，低层的安全服务用来保护某个传输媒介。

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In each layer, electrons exist at a different level of energy, determined by the layer's thickness.

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Going forward, this level could translate into a layer of resistance.

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Only if the product introduces something truly new, such as soyabeans with a much-higher oil level than usual, is there an additional layer of scrutiny.

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