然后，又加入一些脱离层次的设计元素。

Next, the operation in which it deviates from this layer was added.

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制备方法包括两个步骤：1）制脱离层；

The preparation process comprises two steps: 1) preparation of the separating layer;

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对于球果基部不能形成脱离层的针叶树，摇树机的作用不大，或者完全不起作用。

For conifers which do not form an abscission layer at the base of the cone, shakers have been partially or completely unsuccessful.

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