| 词汇 | leaf-scar |
| 释义 | BETA leaf scarcollocation in Englishmeanings of leafand scarThese words are often used together. Click on the links below to explore the meanings. leaf noun[ C ] uk /liːf/ us /liːf/ one of the flat, usually green parts of a plant that are joined at one end to the stem ... See more at leaf scar noun[ C ] uk /skɑːr/ us /skɑːr/ a mark left on part of the body after an injury, such as a cut, ... See more at scar Examples of leaf scarleaf scar The leafscar is in the uppermost part of the cushion, which has very little upper field. In the following descriptions, the leaf cushions are orientated in the traditional way when dealing with such lycopsids, with the ligule above the leafscar. They also state that there is a single, large vascular trace in the middle of the leafscar. The specimens of stem bark show helically arranged contiguous leaf cushions, which clearly protrude from the stem, and have a prominent leafscar. A leafscar is found where a plant branches. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When the leaf is shed, it leaves a leafscar on the twig. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The nodes are the eyes and each has a leafscar. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. If anything, the leaf scars become larger in the smaller cushions, and consequently take up more of the cushion area. The corresponding leaf scars cannot be counted to assess the duration of this part of the life cycle. These were distinguished from older seedlings by their small size, smooth thin bark, and small number of leaves and leaf scars. A method of estimation of litter fall by counting leaf scars is not adequate. False leaf scars arranged in apparent helical phyllotaxis, with an angle of about 45°. Total leaf production was estimated by counting the number of leaf scars and leaves. Stem compound cleaved compression, showing false leaf scars (shadows) and raised areas (light) demonstrating stem tissues pushed up into swollen leaf bases on counterpart. A possible solution might be to count leaf scars, but this would only be useful if the weight of individual leaves is constant throughout the year. 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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