A highly duplicated index can severely impact the speed of accessing, updating and deleting data.
一个高度重复的索引可能会严重影响访问、更新和删除数据的速度。
Correlated subqueries will greatly degrade the speed of data retrieval, especially for non-selective queries on huge tables with millions of rows and with no index.
相关子查询将极大地降低数据检索的速度，对于拥有几百万个行但没有索引的大型表的非选择性查询更是如此。
Spam control is pretty good, speed is pretty good, the size of the index is pretty good.
垃圾邮件的控制相当不错，速度相当不错，指数的大小非常好。
Disk access rates and configurations affect the speed of database and view opening and of opening and navigating a collection (view index).
磁盘访问率和配置影响数据库、视图打开和集合导航(查看索引)的速度。
It might contain metrics for trip duration, pick-up and drop-off delays, a customer satisfaction index derived from these, average driving speed, and so on.
一次旅行的MC可能包含旅行持续时间、上车和下车延迟、从这些度量得出的客户满意度指数、平均行车速度等度量。
Genetic marking is the equivalent of giving every book a title, table of contents and index-and with much greater speed and accuracy than any librarian could manage.
基因标记相当于给每本书起名，建立内容目录和索引，而且其速度和准确度是任何图书管理员都无法做到的。
Contiguity of physical data or keys is important to the speed of table scans or key-index scans.
物理数据或键的连续性对于表扫描或键-索引扫描的速度十分重要。
Those in large speed-dating sessions instead made choices based on quick and easy-to-assess characteristics such as age, height, body mass index, and weight.
而在大的约会活动中，人们则更倾向于依靠年龄、身高、三维以及体重等简单快速的特征来进行评定。
The technique can image variations in what is known as the refractive index of air - in essence, the speed of light in a given medium.
这项技术能够使空气折射率图形化-本质上就是特定介质下的光速。
A power index model is formed which describes the relation of drum brake average torque with speed and pressure.
建立了某型号鼓式制动器平均制动力矩同速度和压力间的幂指数模型。
We discovered that there is a point where aggregate index costs—more-expensive INSERT and DELETE operations, for example—outweigh a new index's query speed-up benefit.
我发现有一个聚合索引成本的点 —例如，更为昂贵的INSERT和DELETE操作 —超出一个新索引的查询加速所能带来的效益。
You can help speed up index maintenance by using a large buffer pool for the index tablespace, and, if possible, ordering the inserts so that the key values are ordered, not random.
如果为索引表空间使用较大的缓冲池，并且尽可能地将不同 insert排序，以便键值是排好序的，而不是随机的，就可以帮助加快索引维护。
ASA Exposure: Index or speed rating that denotes the film sensitivity, defined by the American National Standards Institution.
ASA曝光指数∶由美国国家标准学会规定，标明胶片对光的敏感程度的指数或感光速度。
Since regional index form is built, it is not necessary to go through all the data in inquiry. Inquiry speed and efficiency will be increased.
由于建立了区域索引表，所以在查询时不必遍历所有的数据，提高了查询速度和效率。
The aggregate index that appears the variation magnitude and variation speed and the variation nature is proposed to describe quantitatively the variation nature and complexity of heterogeneity.
提出了评价储层非均质性的综合评价指标，对储层非均质性的变化幅度、变化速度以及变化的随机性进行定量描述。
According to Ookla’s Net Index, the average speed for a country in Europe is around 12 Mb/second. For the US, it’s around 10.
好，对比一下，欧洲国家的平均网速一般是12Mb/s，美国是10 Mb/s。
Along with lagging and leading indicators, this index highlights the speed and size of growth.
该指数与滞后和先行指标均显示经济增长或收缩的速度和规模。
In this paper, following an analysis of speed audit's target, we propose a framework of speed audit index system.
经过研究，推出一个速度审计指标体系的框架。
After analysis of measurement data, a power index model is formed which describes the relation of drum brake average torque with speed and pressure.
利用测得数据，建立了某型号鼓式制动器平均制动力矩同速度和压力间的幂指数模型。
We put forward the best index range and speed distance curve, thus providing some references and advises in sprint training and teaching.
并提出了最佳的指数范围和速度距离曲线，从而为短跑教学与训练提供参考。
Gives the comparative analysis of index expansion rate, creation time and search response speed by experiment, the result shows that this technique improves the index space and time efficiency.
通过实验，对索引膨胀率、创建时间和检索响应速度进行了对比分析，表明该技术提高了索引的空间与时间效率。
The testings of 25 samples have shown that it is feasible to use ultrasonic speed reduction index to evaluate the quality of concrete structures.
对25个样本的试验结果表明，以声波速度下降指数评定混凝土构件质量是可行的。
In the broad jump takeoff stage, the expenditure rate of level speed is important index on assessing takeoff skill quality, and influenced broad jump achievement.
跳远起跳阶段水平速度的损失率，直接影响跳远成绩，也是评价跳远起跳技术质量的重要指标。
With PP chips and antibacterial matrices blent, the antibacterial special raw material with high melt index is prepared for speed spinning.
采用聚丙烯切片、抗菌母粒共混，制成高熔融指数的抗菌高速纺专用料进行纺丝。
The mean speed of blood flow in MCA, the mean blood viscosity and erythrocyte deformity index at 3to 7days were lower than those in the control group(P<0.05).
纳洛酮组第3～7天内的MCA的平均血流速度、平均全血黏稠度和红细胞变形指数皆低于对照组（P<0.05）；
Diathesis index included strength, speed, flexibility and susceptibility, etc.
体能素质指标包括力量、速度、柔韧性及灵敏性等。
Semiconductor nanoparticles, which own large nonlinear refractive index and fast response speed, have been extensively studied in the last decades.
半导体纳米微粒因其非线性折射率高、响应时间快而在过去的十年里倍受关注。
There was a remarkable correlation between the syndromes of hyperactivity of liver-yang and distinguish index of word-learning, speed of number-copying.
肝阳上亢证与词语学习辨别指数、抄写数字速度显著相关。
The effects of excess heating agent index, oxygen supplying speed and ar flow rate on heating up speed and heating up range are discussed.
研究了发热剂过剩指数、供氧速度、氩气流量对升温速度、升温值的影响。
Reasonable evaluation has been made to the whole performance and technical index of speed governor of Unit no. 0, Ankang Hydro Power Station based on related test and analysis.
通过对安康水电厂0号机组调速器有关试验的测试与分析，对该调速器的整体性能及技术指标作出合理评价。
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