keystone layer 中文意思是什麼
keystone layer
解釋
拱頂石層-
The keystone of the thesis is the development direction of web technology, that is b / s mode has developed from two - layer structure to three or more layers. the thesis takes the financing plan search management system of some insurance and investment company for example, puts emphasis on discussing the solution of sybase enterprise web, distributed and c / s application, and introduces at length the whole application procedure of the object component of using b / s mode which uses jaguar cts developed by java as the component server and powerdynamo as the application server
本文重點介紹了web三層乃至n層（包含對象組件技術）模式的發展狀況，以信託投資公司的資金計劃查詢管理系統為例，採用了sysbase企業級的web分散式開發環境sybaseeastudio ，詳細介紹了運用b s模式的對象組件技術、用純java開發的jaguarcts作為組件服務器、用powerdynamo作為應用服務器的全部實現過程。 -
It result in water level rising, hypo - salinification aggravating, sediment silting up, the lake atrophy, marsh extending and nature disaster such as droughu waterlog ^ salinification occurring frequently. completely analysis to geology and hydrology conditions of the district along yellow river in shandong has been applied in this paper and aquifer ' s hydrological characteristic and subsurface flow ' s characteristic have been analysed as keystone in the paper. after finding out the distribution rule and formation conditions of the shallow layer " s ground water resource, divide the district into three hydrological sections according to hydrological conditions and subsurface flow characteristic
本文對山東沿黃地帶地質、水文地質條件進行了全面系統的分析，並重點分析了區內含水層的水文地質特徵及地下水運動特徵，進一步查明了淺層地下水資源的形成條件和分佈規律，根據水文地質條件及地下水運動特徵，劃分出三個水文地質區，劃分並論證了粘土裂隙含水層的形成及供水意義；確定了科學的水文、水文地質參數，為準確地計算淺層地下水資源奠定了可靠的基礎；根據淺層地下水資源形成特點，建立了地下水均衡方程式，據此，計算了區內淺層地下水資源及淺層地下水可采資源。
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