indexed access造句
例句與造句
- If the underlying data source supports indexed access such as
如果基礎(chǔ)數(shù)據(jù)源支持索引訪問（如 - Supports iteration and indexed access
支持迭代和索引訪問。 - It will choose indexed access if it has lower cost than table scan
如果使用索引的開銷比表掃描的開銷低，優(yōu)化器將選擇索引訪問。 - The process of setting up a file index or directory and writing the necessary values for indexed access of the file
建立文檔索引或目錄以及對文檔的索引訪問寫入所需值的過程。 - In the indexed access method , a method of indicating that a record or block is in use and is not available for another request
在索引存取方法中,指明一個記錄或數(shù)據(jù)塊處于使用之中而且不再接受另一個使用請求的一種方法。 - It's difficult to find indexed access in a sentence. 用indexed access造句挺難的
- A multiple index hint also enforces index anding and the query optimizer applies as many conditions as possible on each index accessed
多索引提示還強(qiáng)制執(zhí)行索引and運(yùn)算，查詢優(yōu)化器將對每個被訪問的索引應(yīng)用盡可能多的條件。 - Overall - it ' s definitely a good thing . in practice , you may see a much stronger bias towards indexed access paths which may impact performance
總之? ?這肯定是一個好事。事實上，你可以發(fā)現(xiàn)對索引訪問路徑更強(qiáng)的偏好，這將影響性能。 - Setting the varchar no trailing blanks column option generally improves performance , because it allows more operations to be pushed down and more optimization of the remote sql statements to encourage index access
通過設(shè)置varchar _ no _ trailing _ blanks列選項通?？梢蕴岣咝阅埽驗樗试S下推更多的操作，以及對遠(yuǎn)程sql語句的更多優(yōu)化，以鼓勵索引訪問。 - Whether the seeding absence alarm device works well or not is mainly decided by anti - dust condition of seeding absence monitoring sensor . it had been analyzed the factors affecting the anti - dust performance of optoelectronic sensor . double - way laser reverse direction sensor has been made ( anti - dust index access to 0 . 95 , while the index of the led only reach 0 . 5 around )
本研究從器件、結(jié)構(gòu)、放大電路等多方面分析了影響光電傳感器抗塵性能的因素，制作了雙路激光逆向直射傳感器(根據(jù)本文提出的量化方案抗塵指數(shù)可達(dá)0 . 95 ，一般led光電傳感器為0 . 5左右) 。 - Previous researchers have always determined the sp atial distribution patterns ( sdp ) of castanopsis kawakamii with a sample - dis tance method . however , the distribution patterns may be affected by the quadrat si ze and , in the course of analysis , the density differences among the cluster plots are not considered ; therefore , differences of cluster plot size and the dispersi on degree among individuals of cluster plots can not be known . authers of this pa per have determined the spatial distribution patterns of castanopsis kawakamii population in different habitats by means of non - quadrat distance method and a nalysed the pattern intensity and grain of the sdp . the pattern intensity is defi ned with the relative density differences and the pattern grain can embody the d ispersion degree of the individuals in the plots , and the dispersion degree among the plots . the determined results are as follows . the intensities of the species range in order from strong to week : litsea mollifolia p . kawakamii i . purpure a r . cochinchinensis c . kawakamii c . carlessii d . oldphamii s . superba . the gra ins of the species queue in order from coarse to close : s . superba = litsea mollif olia r . cohinchinensis c . kawakamii = i . purpurea c . carlessii p . racemosam d . oldp hamii . these determined results tally basiclly with the results authers of this paper have got in determining the same plots by means of aggregate index access ing method . in view of this , it is held that the sdp of c . kawakamii is closely related to the habitats and biological features
前人都是采用樣方方法對格氏栲種群數(shù)量的空間格局進(jìn)行測定，而格局分布有可能受樣方大小的影響，且分析過程中沒有涉及聚塊間密度差的問題，因而無法掌握種群的聚塊大小差別及聚塊內(nèi)個體間的離散程度.本研究采用無樣方距離法，測定不同生境的格氏栲種群空間格局，分析格氏栲種群格局的強(qiáng)度和紋理.強(qiáng)度以聚塊和間隙的密度差來定義，紋理則是體現(xiàn)聚塊內(nèi)個體間的離散程度與諸聚塊間的分離程度.測定結(jié)果表明，格氏栲種群格局強(qiáng)度從高到低排列次序為：木姜子蚊母樹冬青茜草樹格氏栲米櫧虎皮楠木荷；格局紋理從粗到細(xì)的順序是：木荷=木姜子茜草樹格氏栲=冬青米櫧蚊母樹虎皮楠.這一測定結(jié)果與作者采用聚集度指標(biāo)測定相同樣地格氏栲種群空間格局的結(jié)果基本相符.因此，格氏栲空間格局類型及分布與格氏栲生物學(xué)特性及生境的關(guān)系密切