N a layer of parenchyma cells that is formed at the bases of fruits, flowers, and leaves before abscission. As the parenchyma disintegrates, the organ becomes separated from the plant (植物的)脱落层
The roof abscission layer is the biggest security risk in bolting support tunnel.
顶板离层是锚杆支护巷道最大的安全隐患之一。
The roof abscission layer is the biggest security hidden danger in bolting support tunnel.
顶板离层是锚杆支护巷道最大的安全隐患之一。
For conifers which do not form an abscission layer at the base of the cone, shakers have been partially or completely unsuccessful.
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。
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