英语词汇“ring-porous”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

ring-porous adj. Forestry designating wood and trees, esp. broadleaved hardwood species occurring in dry habitats, in which larger pores are produced in early wood and smaller pores are produced in latewood, resulting in conspicuous, alternating rings of larger and smaller pores when viewed in transverse section.Contrasted with diffuse-porous.

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ring-porous1890

ring-pored1893

1890 Wood-worker Dec. 14/1 The so-called ring-porous woods, like oak, ash, etc., show more strength when their annual rings contain a small amount of thin-walled spring wood and a large amount of thick-walled summer wood.

1928 Forestry 2 65 Under sub-alpine conditions woods which are normally diffuse-porous tend to become ring-porous.

1956 F. W. Jane Struct. Wood xi. 250 Very approximately,..the timber of a ring porous hardwood possesses maximum strength when its growth rings number between 6 and 10 to the inch.

2000 P. Thomas Trees iii. 49 In spring, ring-porous trees tend to leaf out later than diffuse-porous trees.

单词	ring-porous
释义	> as lemmas ring-porous ring-porous adj. Forestry designating wood and trees, esp. broadleaved hardwood species occurring in dry habitats, in which larger pores are produced in early wood and smaller pores are produced in latewood, resulting in conspicuous, alternating rings of larger and smaller pores when viewed in transverse section.Contrasted with diffuse-porous. ΘΚΠ the world > plants > part of plant > part of tree or woody plant > wood > [adjective] > ring-porous ring-porous1890 ring-pored1893 1890 Wood-worker Dec. 14/1 The so-called ring-porous woods, like oak, ash, etc., show more strength when their annual rings contain a small amount of thin-walled spring wood and a large amount of thick-walled summer wood. 1928 Forestry 2 65 Under sub-alpine conditions woods which are normally diffuse-porous tend to become ring-porous. 1956 F. W. Jane Struct. Wood xi. 250 Very approximately,..the timber of a ring porous hardwood possesses maximum strength when its growth rings number between 6 and 10 to the inch. 2000 P. Thomas Trees iii. 49 In spring, ring-porous trees tend to leaf out later than diffuse-porous trees. extracted from ringn.¹ < as lemmas
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> as lemmas