欠測值 的英文怎麼說
中文拼音 [qiàncèzhí]
欠測值
英文
missing value-
The low - voltage relay and the excess voltage relay are integrated into one relay, which can display the real time of the voltage of the circuit and the limit of voltage can be modified
該繼電器的設計思想是將過壓繼電器和欠壓繼電器集成到一起，並且實時顯示所測電壓值，能修改電壓的上、下限。By comparing the numerical results of water infiltration with air and without air, it is shown that the method in this paper is more effective for solving problems of water infiltration in unsaturated soil. in this paper the forming process of oil - bearing basin is the main research object and the mathematic model of geology is built, in order to simulate the dynamic forming process of stratums especially oil - bearing stratum in geology history in the time and space concept, further to investigate the history of petroleum forming, transmitting, accumulating and predict the distributing rule and scope of petroleum, and offer an rapid, quantitative, exact, general choice for the researcher of petroleum geology. with denudation, poor - compactness and sedimentation hiatus, the stratum relations of sedimentation section is judged, and the ancient thickness and pressure of stratum layer are recovered by the inversion method of back stripping. the numerical simulation algorithm of recovery of geological history is also given
為了利用現代化的計算技術再現含油氣盆地的地史演化發育過程，以便進一步定量化研究油氣的生成、運移和聚集的歷史以及預測油氣分佈規律、分佈范圍，為石油地質學家提供一個快速、準確、定量、綜合的研究手段，本文就含油氣盆地的地史演化發育過程為主要研究對象，建立了數學地質模型，運用優化理論與演算法，在考慮了剝蝕、欠壓實、沉積間斷等地質現象的情況下，採用回剝反演法，應用鉆井、測井、地震等方法獲得的地層物性資料，判別沉積剖面中地層的接觸關系，恢復地層的古厚度、古壓力，構造了地史恢復的數值模擬方法。At present the identification signal of rolling bearing is based on analog monitoring system composed of analog instrument such as fft analyzer, amplitude analyzer and so on. the system has the shortcoming as follows : not enough friendly user interface, unitary function, under abundant analytical contents, poor generality, long developing period, high cost and so forth
目前對滾動軸承信號識別主要採用模擬監測系統，系統均由模擬量儀器組成，如fft分析儀、幅值分析儀電平記錄儀等，系統存在操作界面不夠友好，功能單一，分析內容欠豐富、通用性差、開發周期長、成本高等缺點。This thesis mainly researches on pattern of telecommunication management analysis and decision support in our fix - line telecommunication operation. first the construction of data warehouse is discussed, analyses the data of the base information, billing information and calling detail record of the customer, and then discuss the methods of data mining including defining the operation scope, sampling, data analysis, modeling and implementation we put focal point on the choice and design that the model of data mining, on the basis of the already studies of abroad and the actual needs of fix - line telecommunication company. three data mining models of our fix - line telecommunication operation are putted forward : customer value model, customer retention model, and customer segment model
本文對于固網通信業經營決策支持模式的探討和研究，是從企業級數據倉庫的構建出發，圍繞如何提高企業客戶細化和預測能力的問題，針對通信企業積累的大量客戶基本信息、客戶通話信息、客戶帳單信息、客戶繳欠費等數據，在數據挖掘方法論的指導下，通過業務問題范圍、選取和抽樣、探索型數據分析、建模和實施等步驟進行分析，闡述通信企業以數據倉庫為核心的數據挖掘模型選擇與設計的一般方法，提出我國固網通信運營業的三個數據挖掘應用模型:客戶分群，客戶流失和客戶價值分析。分享友人