prism n. 1.【數(shù)學(xué)】棱柱(體),角柱(體);【物理學(xué)】(結(jié) ...
tidal adj. 1.潮汐的;潮水(似)的。 2.由于潮水作用的,定時漲落的;開船時間視潮汐而變動的(客船班次)。 His speech caused a tidal wave of indignation throughout the country. 他的演說在全國掀起了怒潮。
prism n. 1.【數(shù)學(xué)】棱柱(體),角柱(體);【物理學(xué)】(結(jié)晶)柱。 2.棱鏡;棱晶。 3.【物理學(xué)】分光光譜;〔pl.〕光譜的七色;折光物體。 an oblique [a regular, a right, a triangular] prism 斜[正、直、三角]棱柱。 cross prisms 正角棱鏡。 prism glasses 棱鏡雙目望遠鏡。 a reversing prism 反像棱鏡。 a prism of first [second] order 【物理學(xué)】(結(jié)晶)第一[第二]柱。
Tidal prism of sansha bay and its water exchange with the open sea 三沙灣納潮量及灣內(nèi)外的水交換
Abstract : the qiantang estuary with violent hydrodynamic conditions is well known for its tidal bore . the regulation of the estuary in the past , especially the progress since the founding of new china are reviewed . the principles of the regulation and planning of the qiantang estuary formulated in 1960s are expounded , i . e . , to narrow the river to reduce the tidal prism , and to increase the ratio of the river flow to tidal discharge . the experience of estuary regulation / reclamation is summarized , especially the engineering measures to protect the groin head and to use polder dykes as sea defense works . finally , the effect is analyzed of the large - scale constraction / reclamation in the estuary on the tides , flooding high water level , estuary bed and the northern deep waterway in the hangzhou bay 文摘:以涌潮聞名的錢塘江河口,動力強勁,破壞力極大.回顧錢塘江河口歷代治理情況,重點記述1949年以來治理工作的進展,論述60年代提出的錢塘江河口治理規(guī)劃的指導(dǎo)思想,即縮窄江道,減少進潮量,增大山潮水比值的整治原則.總結(jié)整治規(guī)劃實施過程中治江圍涂經(jīng)驗,特別是“以圍代壩”和丁壩壩頭保護等工程措施.分析錢塘江河口大規(guī)模治江圍涂后對錢塘江河口潮汐、洪水位、河床以及杭州灣北岸深槽的影響
百科解釋
A tidal prism is the volume of water in an estuary or inlet between mean high tide and mean low tide.Luketina, D.