查询词典 time-travel

The temporal variable "Now" always presents in HRDM or BCDM , while "UC" presents only in BCDM, HRDM is TDB which can represent valid time, while BCDM is a bitemporal database model which can represent both valid time and transaction time.

本文对于TDB发展历史中典型模式进行研究，对于历史数据库和双时态数据库中的时间变元进行分析，有针对性地对它们的时间变元进行了绑定操作。

I still remember a cold evening in 2003's winter,when the snowflake was blusterous in the sky,and when the road was much pale owning to the ice on the ground, and I had only two choices in front of me,going abroad or pursuing a postgraduate degree,maybe others didn't know my suffering,but I did,for my English was so poor that whichever I chose ,it would not be avail for me at last,I participated in a series of English classes,reading and writing all day long,I was very sorry that I had troubled too many friends, as a result ,I could simply communite with our foreign professor,but the problem was not simple,I got a low mark in my Toefl test,thanked to the language class in the school abroad,I arrived at Quebec three monthes later,my first impression about this city was cold, since my hometown is located in the south of the Yangtze River, I have to imagine what does the 'heavy snow' mean cause there are always snowing lightly,to my surprise,almost half a year it was heavy snowing in the city,and it did really satisfy my desire about the snow,furthermore,we also had a long holiday,when I got there,most of my classmates were prepared for their vacation ,so I could asked for help from the senior, maybe I was not tall but sometimes the snow on the ground was taller than me,actually ,I had a good time when I stayed with my friends for we have a common language named chinese,the language class was simple for me,but the teacher was serious,whether you passed the course or not was depended on her, so you'd better don't offend her,thank godness, I passed this class at first time after a few monthes,then began with the other courses,it was said that chinese students abroad was the most assiduous in the world,and that was ture,usually,we didn't have a strong suit in the ability of a foreign language,since it asked for some understanding in our course,so I had to borrowed the note from others when I first went to class,how times fly,my GPA first was above 4.0 at that time,I phoned my relations,telling them I was okey there,but in the first evening of that holiday,a fire broke out in our dorm,I couldn't find my passport after the incident,though most of our res were moved outside,maybe it was burnt out or was lost at somewhere,but it told me that I couldn't stay longer in this city,we comforted each other for a while,''Goodbye!

雪花在2003年一个寒冷的夜空中无情的肆虐着，回家的大道被雪映的煞白，而摆在我面前的却只有两条窄窄的小路，考研，出国，也许别人不会知道我的痛苦，可是我清楚，其实我的英语很烂，现在不管选那个，好像对我都不利，我疯狂的去参加一Qy系列的英语辅导班，从早到晚大声的阅读，没天没地的做题目，以致招来了很多非议，感觉可以和外教简单交流了，可是我的托福成绩还是不堪入目，不过好在那边学校开了语言课，所以三个月后，我还是顺利来到了加拿大的魁北克省，那里给我的第一感觉就是一个字'冷'，我们江南一般下小雪，大雪是什么只能靠想像了，不过那边将近有大半年的时间都在下大雪，让我这个雪盲好好过了一把雪瘾，不过假期也长，我去的时候大多已不上课了，所以可以找到学姐，学兄，也许是我的个子不太高，不过积雪有时完全可以把我湮没，和他们在一起感觉很亲切，很开心，也许我们在一起都说汉语吧，语言课是比较简单的，不过老师很变态，她说行才行，不行你就是行也不行，所以这个老师是绝对不能得罪的，学了很长一段时间，语言考试通过了，就可以正常上课了，呵呵，都说中国留学生最刻苦了，不苦行么，我们语言能力一般都不是强项，加上课程需要一些理解的能力，初次去听课，不借阅他人的笔记是绝对不行的，时间总是晃的很快，那次的GPA成绩第一次超过了4.0，打了电话回家，报了平安，可是假期的第一个晚上就发生了一些小小的意外，一把无名火把我们住的地方烧了，当时东西都搬出来了，好在没有损失什么，可是后来检查了一下，我的护照怎么都找不到了，也许是烧了吧，也是是掉了，反正这件事也告诉了我，魁北克我是待不长了，朋友们在一起相互惋惜了一阵。

The results revealed that screwdrivers with triangle shaped handle could help subjects produce the maximum torque. Besides, using screwdrivers with hexagon shaped handle spent the least time, generated the minimum biceps muscle activity, and bad the least subjective fatigue rating. Moreover, wearing an anti-static glove or being barehanded can produced the maximum torque and spent the least time as well. Experiment 2 evaluates the handle diameter of screwdriver (30 mm, 34 mm or 38 mm) and operation plan. The results showed that the torque increased with the increase of the radius, the operation time and the brachioradialis muscle activity also increased with the increase of the radius.

本 研究共分为三次实验，实验一分析握把造型(八角形、锐角六角形、圆角六角形、枪型、圆角三角形)与手套(棉质手套、防静电手套、赤手)的影响，结果显示三角形造型握把可产生最大扭力，六角形造型握把的锁附螺丝时间最短、二头肌肌肉活动度最低、主观整体疲劳评比最低，防静电手套与赤手状态的扭力最大并且锁附螺丝时间最短；实验二比较握把直径(30 mm、34 mm、38 mm)与作业面的影响，结果显示直径越大扭力越大，但直径越小锁附螺丝时间则越短，且肱桡肌肌肉活动度越低。

It is OK for must that this Baidu still calculates newlier, just knowing is why to be planted next time result, ever Baidu of period of time also is infiltrate my station for a time limbo, within an inch of gives braise in soy sauce.

总得来说这次百度更新还算可以，只是不知道下次又是何种结果，曾一段时间百度也是一度把我的站打入冷宫，差点就给红烧了。

Along with the process of treating time and the increase of the cadmium concn., the chlorophyll content of D. caryophyllus was reduced. When D. caryophyllus leaves were treated by 5.0 mg/L cadmium for 20 d, the cadmium concn. showed a negative correlation to time, with correlation coefficient of-0.789. In the same treating time, the cadmium concn. showed significant negative correlation with chlorophyll content.

随着处理时间的推移和镉浓度的增加，石竹叶绿素含量在减小，镉为5.0 mg/L处理20 d时，镉浓度与时间相关系数为-0.789；在同一处理时间内，镉浓度与叶绿素均呈显著负相关。

At the same time, on the base of analysis of the present situation, the development trend and the leading edge technology, the necessity and feasibility about the exploitation of the full hydraulic bulldozer"s sate monitoring and fault diagnosis system is given; According to the structure, working feature and working environment, it works out system schema and system composition; The system is divided into display module, communication module and fault diagnosis module by means of block design, the implementation method and key parameter are also given; In light of the features of the full hydraulic bulldozer, the state monitoring and fault diagnosis platform composed of controller RC6-9 and display DI2/10 is designed based on CAN-Bus and the hardware design is completed; It lists the measured values and state of monitored parameters which should be real-time displayed in monitoring module as well as the data which will be transmitted; Furthermore, On the base of the study of, it gives 34 kinds of constant faults" diagnosis methods; Using BODAS software and DPS software, it compile the program code of the controller and the displayer; At last, this paper design and make the simulation test device of control system of construction machinery, through the experiment, the realizability, the categoricalness, the reliability, the stability and real-time are tested, in addition, the improved methods are given.

本文收集整理了国内外智能推土机研究的相关文献资料，综合分析了国内外智能推土机的研究现状、发展趋势和前沿技术，论证了开发全液压推土机智能系统的重要组成部分&全液压推土机状态监测与故障诊断系统&的必要性和可行性；根据全液压推土机的结构、作业特点和作业环境，制定了全液压推土机状态监测与故障诊断系统方案，确定了系统的结构组成；采用模块化设计方法，将整个系统分成了显示、通信和故障诊断三个模块，给出了各模块功能的实现方法，确定了各模块的关键技术参数：选用RC6-9和DI2／10作为系统的控制器和显示器，用CAN总线搭建了系统的通信平台，完成了系统的硬件设计；确定了系统监测参数和通信数据，对全液压推土机常见故障特征进行了分析，给出了34种常见故障的诊断方法；在BODAS软件和DPS软件的集成编程环境下，编写了控制器和显示器程序；设计并制作了工程机械控制系统模拟试验板，并在此基础上通过多次的程序调试与试验，对所设计的全液压推土机状态监测与故障诊断系统功能的可实现性、完备性、可靠性、稳定性和实时性进行了检验，证实了此系统的可行性，并提出了进一步的改进方案和措施。

The results showed: for the toxicity of two kinds of pollutants, the Cd(superscript 2+) is more poisonous that the Pd(superscript 2+). For the sensitivity to the pollutants, the P. caudatum, C cathayensi and D. japonica increase evidently in turn. The statistical analyses indicated that the single and combined toxicity effects both increase with the exposed time extended, especially for the combined toxicity (P.05), showing a marked time-effect relation. As for the single effect, ii increase prominently with Pb(superscript 2+) and Cd(superscript 2+) concentrations (P.05); But in the case of binary effect, the results showed obviously a time-effect (P.01) as well as a concentraction-effect relations.

结果表明：在同等条件下，Cd(上标 2+)对三者的致毒效应都明显强于Pb(上标 2+)；3种动物中，草履虫最敏感，而圆田螺耐受能力最强；随单一毒物浓度的增大以及暴露时间的延长，两者的致毒效应都显著增大，表现出明显的浓度－效应和时间－效应关系；二者复合作用时，对3种动物的致毒效应主要表现为与二组分的浓度比例有关。

Along with the mining industry declining, the settlement distribution, the population aging (in 96 year Tongshan Village old person ratio nearly 30%) with industrial reforming, under such environmental chane, Japanese Colonial Periodaround the time, the gold ore prosperous time, after the Recession of Taiwan in the recovering time historical vein, the substantive space, how does the social space's change live regarding the place maintains with is balanced; How between the reciprocity to achieve settlement old person each other's interaction and the familiar environment?

随著矿业的没落，聚落的分布，人口的老化(96年铜山里老人比率近30%)与产业的转型，在这样的环境变迁下，日治时期前后、金矿兴盛时期、光复时期之后的历史脉络里，实质空间、社会空间的改变对於地方之居住如何相维持与平衡；相互关系之间如何达到聚落老人彼此的互动与熟悉的居住环境？

Preparation of the cathode includes:shaping under the press of 40Mpa, sintering at 550℃for 1 hour and at 900℃for 8 hours and threading with molybdenum bar; Considering the literatures we choose CaCl2 as salt for preparation titanium. Pretreatment of salt is for 1 hour at 100℃and for 2 hours at 300℃. Partial pressure of oxygen which need lower than 5.11×10-7Pa to reduct titanium oxides and hygroscopic property of salt need a sealed equipment to electrolyse. And finally successfully designed a satisfied one and the results show that the equipment can be satisfied the requirment of the experiment. Flow of the inert gas is 1.5L/min, the voltage is 2.8 V, temperature is 850℃and time is 2 hours during pre-electrolysis. Flow of the inert gas is 0.2L/min, the voltage is 3.1 V, temperature is 900℃and time changes with the mass of TiO2 during electrolysis, namely the greater need the longer time; To eliminate influence of salt and other impurities, the products need to wash with distilled water and dilute chlorhydric acid , then wash with dilute hydrochloric acid under supersonic wave assistant. Finally, electrometical properties of the electrolysis of TiO2 is researched by cyclic voltammetry and chronoamperometry, and results show that there are two main reodox steps, namely from TiO2 to TiO and from TiO to Ti.

阴极制备主要包括40MPa压力下模压成型、两段式烧结(1小时内升至550℃保温1小时，再1小时升温至900℃保温8小时)及烧结后TiO2块打孔用钼棒串接三个主要环节；实验中选用CaCl2作为电解熔盐，并对其进行预处理(100℃，保温1小时； 300℃，保温2小时)；经热力学计算，还原钛氧化物的氧分压至少要低于5.11×10-7Pa，结合电解过程中所用熔盐CaCl2有极强的吸水性的特点，电解装置应有较高的密封性，自行设计了一套密封性可靠的电解装置，便于实验过程中熔盐预处理和氧分压的控制；通过干燥处理预电解过程中Ar流量大约为1.5L/min、电压为2.8 V、温度为850℃、时间为2小时，电解过程中Ar流量大约为0.2L/min、电压为3.1V、温度为900℃，实验结果表明电解时间与TiO2质量密切相关，质量越大需要电解的时间越长；通过自来水冲洗—稀盐酸浸泡、洗涤—在超声波辅助作用下稀盐酸洗涤，可减少熔盐及其它杂质对电解产物检测结果的影响；最后，通过循环伏安法、计时电流法对电解机理的研究，确定电解还原TiO2制备金属钛主要经历了TiO2-TiO-Ti的过程。

The overview is in 20 centuries before 90 time the methane chloride of our country production basically uses conventional technology, but all sorts of craft lag behind quite mostly, begin to change methanol chloridize technology in succession from 90 time, but the technical level at that time and foreign photograph are older than difference, main show is dimensions quality of tall, product needs small, specific power consumption," 3 useless " big, equipment corrodes discharge capacity to wait for a problem badly.

梗概： 概述在20世纪90年代以前我国的甲烷氯化物生产主要采用传统技术，但各种工艺大多比较落后，自90年代开始纷纷改走甲醇氯化工艺，但当时的技术水平和国外相比差距较大，主要表现为规模小、能耗高、产品质量差、&三废&排放量大、设备腐蚀严重等新问题。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了