| 词汇 | subsidence |
| 释义 | subsidence noun[ U ] uk /səbˈsaɪ.dəns//ˈsʌb.sɪ.dəns/ us /səbˈsaɪ.dəns//ˈsʌb.sə.dəns/ the process by which land or buildings sink to a lower level: （地面或建筑物的）下沉，沉降 The building had to be demolished because of subsidence.这栋大楼因为沉降的原因必须拆除。 Moving downwards base jumping cascade descend descent downwardly drop/fall/sink like a stoneidiom fall fall down go down nosedive parachute plumb plunge post-dive pronate pronation put something/someone down rain stone touch Examples of subsidencesubsidence The model assumes constant tectonic subsidence and a random variation in sea level. This succession could represent a fining-upward sequence due to subsidence of the shelf if preserved in the original stratigraphic order. In fact, more than half of the areas have a lower final ground subsidence level than the standards. Thus, the policy implication that more stringent environmental standards should be used would still apply here when the target ground subsidence levels are overachieved. Differentiated flexural tectonic subsidence has been successively compensated by accumulation of the sediments within the basin. These folds could be related to cauldron subsidence, and they suggest that subsidence probably began relatively soon after the gabbro and troctolite were emplaced. In many localities, layering is disturbed by small-scale faults and folds, probably also related to subsidence. The limited five-year historical land subsidence level records may affect the accuracy of the regression analysis. A long-term relative sea-level cycle most probably reflects the local tectonic development and the changes in the subsidence rates. The first step in subsidence analysis is to calculate the water-loaded subsidence, thus isolating the tectonic component of subsidence. Shallowing-upward cycles are usually developed under high subsidence conditions whereas low to moderate rates of deposition may create deepening-upward cycles. We consider two different scenarios of ground subsidence control. The rift events are followed by thermal subsidence when strain rate decreases to zero. Water-loaded subsidence data must also be corrected for global sea-level variation since subsidence calculations generally use present-day sea-level as a datum. Thus, the benchmark used for setting the required improvement ratio is the average land subsidence level for the whole coastal area. 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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