Frost crack initiation point.JPG
Rosser1954 Roger Griffith
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Frost crack initiation point, The initiation point of a frost crack on an ash tree. Eglinton, North Ayrshire, Scotland
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Frost crack initiation point, Diseases and disorders of Fraxinus, Frost cracks, Fraxinus excelsior (bark)
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ja
霜割れ始点、霜割れ始点。エグリントン
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霜割れ始点, フラクシヌス病, 霜割れ, キリギリスの消失
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crack flaw initiation cracking rupture crevice cleft freezing point disordered freezing disorder illness frost