词汇 | dew |
释义 | dew noun[ U ] uk /dʒuː/ us /duː/ drops of water that form on the ground and other surfaces outside during the night露,露水 ullstein bild/GettyImages Precipitation: clouds, dew, fog & steam billow brume chemtrail cirrus cloud-capped cloudily cloudlessly haze haze over lowering misty moisture overcast pall Scotch mist steam (something) up steamily sub-visible vapour trail vog Related worddewy dew | American Dictionarydew noun[ U ] us/du, dju/ small drops of water that form on the ground and other surfaces outside esp. during the night Examples of dewdew Our field measurements show that there is virtually no rain, although dew is frequent. Few larvae were found in dew droplets or concealed within heather leaflets; most larvae were recovered from the plant surface. The amount of moisture was expressed as millimetres of dew. During the early dry and dry seasons of 2002, leaf water potential and osmotic pressure were measured before and after a dew deposition event occurred. The process is not strictly contingent upon tidal ebb and flow : circadian dews and rainfalls can produce identical cycling. Average water gain by dew was calculated as average dew deposited on the leaves minus average nocturnal water loss. I know my heart will heal, the pain will lift as dew upon the grass is gone before our feet can feel it. The results indicate that dew formation was quite frequent and could have an important role in the growth and survival of some epiphytic bromeliads. They survive by occupying the endolithic niche among the hygroscopic halite crystals, which is able to condense moisture from occasional fog or dew. Finer-scale variations amongst the two deserts, however, cannot be explained solely by rainfall, but instead indicate fog and/or dew may be important moisture sources. Here we report on a numerical model that simulates the transport of dew and low levels of rain in undersaturated desert soil. A dew-point apparatus, which enabled a sample of air from a given place to be drawn into a chamber with the mirror, was tried. During the early dry season, dew increased with height and maximal dew amounts occurred at 2.85 m above ground. It seems that epiphytic bromeliads may also rely on alternative sources of water, such as fog or dew. Although dew deposition on plant leaves has potential physiological consequences for some plants, it has received little attention. See all examples of dew 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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