历史存在是存在的一种时态形式。
在英语里有两种时态—过去时和现在时。
英语有多少种时态?。
三种时态分别对应于回顾叙述、同步叙述、预示叙述。
These three kinds of tenses corresponded to the retrospective narrative, the simultaneous narrative, and the predictive narrative, respectively.
他一到北京，就去看他姨妈。事实上初中英语八种时态。
He is going to visit her aunt the day he arrives in Beijing.
后现代并非指的是一种时态，而是指一种思想态度和意识。
Post-modernism does not mean a kind of tense, but refer to a kind of attitude and consciousness.
本文以为《边城》文本在叙事语态上存在三种时态，即过去之事、现在之事、未来之事。
This paper holds that there were three kinds of narrative tenses in the novel, "Border Town", namely, the past tense, the present tense and the future tense.
他说到今年年底他就将在这个城市住了20年了。求英语五种时态的例句，各两个一般现。
He said he would have been living in this city for 20 years by the end of this year.
作者探讨名词、形容词、介词、句型（附15回翻译练习题） 、主动与被动式、附加问句、12种时态。
The writers talk about nouns , adjectives , prepositions , sentence patterns with 15 exercises of translation , active and passive sentences , tag question , and all tenses ( 12 kinds )
譬如，如果一种语言没有表示未来时态这一概念，说话人理所当然地，就无法抓住未来时间的这一理念。
If a language has no future tense, for instance, its speakers would simply not be able to grasp our notion of future time.
DB 2跟踪两种不同类型的时态数据：系统时间和业务时间。
DB2 tracks two different types of temporal data: system time and business time.
在传统语法书里，英语动词过去时被定义为一种指称性的时态，主要用于表述以说话的时间为参照点过去发生的事情或存在的状态。
Traditionally the past tense is defined as a deictic tense mainly used to locate an event or state at some point or period in time prior to the moment of speaking, .
英语是一种以时间顺序为主的语言，我们只想知道什么时候发生了什么事情，而这一点主要是靠我们动词的不同时态来表达的。
English is a chronological language. We just love to know when something happened, and this is indicated by the range and depth of our verb tenses.
时态地理信息系统(TGIS)是一种存储并处理地理实体或现象随时间变化信息的地理信息系统。
TGIS (Temporal geographic information System) is a kind of GIS for storing and manipulating the information of geographic phenomenon along time.
古汉诗的意合句法和时态特征创建了一种“动态美”。
The paratactic syntax and tense feature of Chinese ancient poetry can create a kind of "Dynamic Beauty".
本文通过对网络协议形式化描述和验证问题的研究，针对网络协议的特性，给出了一种基于时态逻辑的模型系统。
After the study on the problems of formal specification and verification for network protocols, this paper gives out a general model system based on the temporal logic.
该文对这类问题进行了详细的讨论，提出了一种基于统计方法的正负时态相关性挖掘算法。
In this paper we discuss this problem in detail and put forward a method of mining positive and negative temporal correlation based on statistics.
起始态作为时态的一种，它表示时间上处于开始阶段。
As one of the Tenses, the initiative tense means the phase of beginning in the time order.
提出了一种基于时态的数据库系统的基本结构，减少数据冗余。
The thesis introduces a structure of database system based on time, which reduces the data redundance.
该文针对网管告警数据库中时间序列存在的连续性、不确定性和模糊性问题，提出了一种基于时态关联规则挖掘告警库的新方法。
For the problems of continuity, uncertainty and fuzziness in the time-series of the network management alarm database, this pa-per puts forward a new mining method based on time-series rules.
文章提出了一种定量计算燃烧室壁面积炭层厚度和积炭表面时态温度的方法，并依据测量数据给出了研究结果。
The paper put out an analytical method to compute the deposit thickness and the instantaneous temperature of the deposit surface, and obtained the computing results.
论文提出了一种基于粗糙集和时态概念的新神经网模型—时态粗糙神经网。
This paper describes a new temporal rough neural network which consists of a combination of rough set and temporal concept.
把异步周期和多时间粒度下的时态模型结合起来研究，并利用异步周期的特点提出了一种有效的挖掘算法。
An algorithm for efficient mining of asynchronous periodic patterns with multiple granularities by exploring some interesting properties related to asynchronous periodicity was proposed.
桂林喀斯特是世界峰林和峰丛喀斯特景观的典型代表地之一，其代表了地球上一种独特的地貌形态和自然地理特征，具有同时态系统演化的特点；
Guilin karst is a typical landscape in the world with peak forest plain and peak clusters depression, a unique landform style, geographical feature and systematic evolution feature of synchronism.
英语中过去时态用法十分复杂，而过去时态表委婉客气是一种常见的用法。
The use of the simple past tense is quite complicated and there is a common use of the simple past tense to express a mild tone.
比如，在阿拉伯文学用语中，有三种语法格，三种数字，两种性别和三种“时态。
For instance, nouns in Literary Arabic have three grammatical cases, three numbers, two genders and three "states."
在检测运动物体方面，根据检测对象(接触线)的运动特征提出了一种对图像序列数据采用时态差分法与模板匹配相结合的检测方法。
In the detection of motion objects, a method based on movement feature of target (catenary) is proposed. It combines temporal differential method and template matching in image sequence data.
在检测运动物体方面，根据检测对象(接触线)的运动特征提出了一种对图像序列数据采用时态差分法与模板匹配相结合的检测方法。
In the detection of motion objects, a method based on movement feature of target (catenary) is proposed. It combines temporal differential method and template matching in image sequence data.
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