| 词汇 | cambium |
| 释义 | cambium noun[ C or U ] biology specializeduk /ˈkæm.bi.əm/ us /ˈkæm.bi.əm/pluralcambiums or cambiauk /ˈkæm.bi.ə/ us /ˈkæm.bi.ə/ a layer of cells in the roots and stems of some plants that divide to produce new tissue, such as xylem and phloem形成层（木本植物根部和茎部的细胞层，其通过细胞分裂形成新的木质部和韧皮部） Parts of plants axil bark bilobed blade bulb caning cascara sagrada corolla endodermis inflorescence knot pistil rooty rosella seed coat seed pod sessile sting taproot tubule Between the bark and the wood is a very thin layer which is called cambium. Leaf dead, cambium of stem green. The cambium layer is the real, active part of the tree. The fungus attacks the cambium tissue underneath the bark. This layer of cambium might be likened to our blood system. cambium | American Dictionarycambium noun[ U ] us/ˈkæm·bi·əm/ biology the layer of growing tissue between the bark (= outer covering) and the wood of a tree that produces new bark and wood Examples of cambiumcambium The term bark is used here to refer collectively to vascular cambium, phloem, cortex and periderm. Trees were classed as dead if they were leafless and with a complete ring of dead cambium at breast height. Furthermore, we investigated the relationship between vegetative phenology and cambium growth. Recently broken branch stumps were defined as those without shed bark or signs of cambium callus growth around the branch stump base. Cells differentiated in the vertical axis in a manner similar to that of the fusiform initials of the vascular cambium. Once the bark has dried to below 55% moisture content, larval penetration to the cambium and survival is greatly improved. For each stem, the amount of bark (referring collectively to vascular cambium, phloem, cortex and epidermis) eaten by each weevil was measured after removing surface resin as described below. Tree death was determined by an absence of foliage and lack of sap in the cambium. They bore into the cambium of the trunk, branches, and twigs of their host plant. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The inner bark cambium and phloem tissues are living, and form a new protective layer of cells as the outer bark pulls apart. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The function of cork cambium is to produce the cork, a tough protective material. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The plant has a large central medulla and a single vascular bundle containing the xylem, phloem and cambium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They bore in the cambium under the bark of the host plant, producing pitch masses on the trunk. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The cork cambium gives rise to thickened cork cells to protect the surface of the plant and reduce water loss. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Inside the phloem is a layer of undifferentiated cells one cell thick called the vascular cambium layer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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