| 1. | If the underlying data source supports indexed access such as
如果基础数据源支持索引访问（如 |
| 2. | Supports iteration and indexed access
支持迭代和索引访问。 |
| 3. | It will choose indexed access if it has lower cost than table scan
如果使用索引的开销比表扫描的开销低，优化器将选择索引访问。 |
| 4. | The process of setting up a file index or directory and writing the necessary values for indexed access of the file
建立文档索引或目录以及对文档的索引访问写入所需值的过程。 |
| 5. | 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,指明一个记录或数据块处于使用之中而且不再接受另一个使用请求的一种方法。 |
| 6. | A multiple index hint also enforces index anding and the query optimizer applies as many conditions as possible on each index accessed
多索引提示还强制执行索引and运算，查询优化器将对每个被访问的索引应用尽可能多的条件。 |
| 7. | Overall - it ' s definitely a good thing . in practice , you may see a much stronger bias towards indexed access paths which may impact performance
总之? ?这肯定是一个好事。事实上，你可以发现对索引访问路径更强的偏好，这将影响性能。 |
| 8. | 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
通过设置varchar _ no _ trailing _ blanks列选项通常可以提高性能，因为它允许下推更多的操作，以及对远程sql语句的更多优化，以鼓励索引访问。 |
| 9. | 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 )
本研究从器件、结构、放大电路等多方面分析了影响光电传感器抗尘性能的因素，制作了双路激光逆向直射传感器(根据本文提出的量化方案抗尘指数可达0 . 95 ，一般led光电传感器为0 . 5左右) 。 |
| 10. | 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
前人都是采用样方方法对格氏栲种群数量的空间格局进行测定，而格局分布有可能受样方大小的影响，且分析过程中没有涉及聚块间密度差的问题，因而无法掌握种群的聚块大小差别及聚块内个体间的离散程度.本研究采用无样方距离法，测定不同生境的格氏栲种群空间格局，分析格氏栲种群格局的强度和纹理.强度以聚块和间隙的密度差来定义，纹理则是体现聚块内个体间的离散程度与诸聚块间的分离程度.测定结果表明，格氏栲种群格局强度从高到低排列次序为：木姜子蚊母树冬青茜草树格氏栲米槠虎皮楠木荷；格局纹理从粗到细的顺序是：木荷=木姜子茜草树格氏栲=冬青米槠蚊母树虎皮楠.这一测定结果与作者采用聚集度指标测定相同样地格氏栲种群空间格局的结果基本相符.因此，格氏栲空间格局类型及分布与格氏栲生物学特性及生境的关系密切 |
