Growth rings. Cross-section through the trunk of a wych elm tree (Ulmus glabra) showing the annular growth rings. A years growth consists of a porous band (dark brown), which is the slow winter growth, and a more dense band (light brown), which is the faster summer growth.
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Details
Creative#:
TOP06668105
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
NO
Property Release:
NO
Right to Privacy:
No
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