| 词汇 | desiccation |
| 释义 | desiccation noun[ U ] chemistry specializeduk /ˌdes.ɪˈkeɪ.ʃən/ us /ˌdes.əˈkeɪ.ʃən/ the process of becoming completely dried干燥;烘干;脱水 Dry weather, arid conditions & dryness aridity bone bone dryidiom dehydrate desertification desiccate dried drought dry (something) out dry something up dryness frazzled frizzled high and dry hyper-arid overdry parch parched sandstorm sun-baked A faint, spiced odor of desiccation filled the bare walls. He ascribed the desiccation to the gradual elevation of the western part of the country. In about two months the process of desiccation was completed. In the gradual desiccation of that region, the lake has now entirely disappeared. Virginity, like certain fruits, can only be preserved by a process of desiccation. Examples of desiccationdesiccation A number of protective mechanisms associated with seed desiccation tolerance have been identified through studies on acquisition and loss of desiccation tolerance in orthodox seeds. Additionally, in desiccation-sensitive seeds, protective antioxidant systems may also fail. The existence of discrete levels of critical water potential is suggestive of specific stresses that cells must accommodate during the acquisition of desiccation tolerance. Specific mechanisms associated with desiccation sensitivity of recalcitrant seeds are still not resolved. The pericarp appears to form the main natural barrier to desiccation under both natural and artificial conditions of seed storage. The correlation between the degree of desiccation, temperature and the level of occurrence of these bacteria in natural environments has yet to be made. It can tolerate high temperatures, desiccation, ultraviolet light and ionising radiation doses 1,000 times higher than would be fatal to humans. There are also some cracks to be seen: these represent just artifacts due to desiccation occurring during scanning microscopic investigation. Samples were kept in a humidity chamber for extended incubation periods to prevent desiccation of the relatively thin agar layer. High humidity is a prerequisite for tick survival since they are susceptible to desiccation when questing for hosts on vegetation. Here eggs are likely to be at lower concentrations and have a lower viability due to greater exposure to desiccation and ultraviolet radiation. This study was undertaken to determine whether extensive vacuolation and high metabolic activity can be contributory factors in desiccation sensitivity. The ability to withstand desiccation may also depend upon increased amounts (or a heightened capacity to synthesize) molecules which stabilize membranes. Desiccation tolerance across life forms interpreted as having nucleated from the surrounding, denser phase. In cotyledons, methyl esterification ranged from 25 to 40 mole% and was 31 mole% after desiccation. 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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