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We designed the multi-channel delay and pulse adjustment circuit based on CPLD providing a solution to fast gating timing and delay problems in large nuclear physic experiments. Its main function is accepting a negative NIM trigger input, and outputting a pulse with adjustable delay and width. Minimum step accuracy of the delay and the pulse adjustment is 10ns when the system frequency is 100MHz.

针对大型核物理实验中的符合测量、多路时间测量系统中的门控快定时信号等应用的需要,设计了一种多路延迟/脉宽调节电路,主要功能是对输入的多路快信号进行延迟和脉宽调节,支持NIM负信号输入和输出,在系统主时钟频率为100MHz的时候,延迟和脉宽调节的最小步进精度为10ns。

GPS has been widely adapted as the main positioning tool nowadays after development for more than 20 years with a new generation updating. The applications of areas and prospects dimension of GPS have exceeded its original purpose. It has become a very important technical method and solution way in almost every field of transportation, communication, metrology, aerologic and so on.

全球定位系统GPS作为新一代的卫星导航定位系统,经过二十多年的发展,已发展成为一种被广泛采用的系统,它的应用领域和应用前景已远远超出了该系统设计者当初的设想,目前,它在航空、航天、军事、交通、运输、源勘探、通信、气象等几乎所有的领域中,都被作为一项非常重要的技术手段和方法,用来进行导航、定时、定位、地球物理参数测定和大气物理参数测定等。

A greenhouse experiment was performed for one year to study the behaviour of Zn in artificial wastewater in simulated wetland system with one year old mangrove plant of Kandelia candel. Three different strenghts of the artificial wastewater were charged into the system in fixed quantity.

对温室中建立的含底泥、潮汐海水和1 a生秋茄苗的模拟湿地系统,分别用人工海水和不同Zn浓度的人工污水定时、定量进行持续1 a的污灌,以研究Zn在模拟系统中各部分的分配和系统对Zn的承受能力。

The fresh chicken feces were obtained from different age 18 healthy chicken, and were not detectedchlortetracycline. The mixture standard solution of CTC and OTC was added in fresh chicken feces at the concentration of 0.5, 1.0 and 4.0ug/ml respectively. The chicken feces were divided to two groups,one were put in the incubator under photophobic condition; another were under the natural illumination.Samples were collected after 0, 0.5, 1, 2, 3, 5, 7, 9, 12 and 15 days, The concentration of chicken feceswas determined by HPLC. According to the theory of degradation kinetics, we fitted the changed trendof concentrations in chicken feces under different time and studied the degradation characteristics ofchlortetracycline in chicken feces.

选取不同日龄健康鸡18只,实验期新鲜鸡粪,,经检测不含四环素类药物,然后加入金霉素标准液,使得各样品中制得的相应药品的浓度为0.5ug/mL、1.0ug/mL、4.0ug/mL,分为两个实验组,第1组放入培养箱中避光黑暗条件下;第2组置于室外自然光下,定时取样,取样时间为0、0.5、1、2、3、5、7、9、12和15d,鸡粪中药物的浓度用本实验建立的高效液相色谱法测定,根据药物降解动力学原理,对鸡粪中药物的浓度随时间的变化趋势进行曲线拟合,研究金霉素在环境鸡粪中的降解动态规律。

However, DPP nanoparticles were found to present multiple emission from pyrene at 385 nm, pyrazoline at 465 nm and an intermolecular pyrazoline-pyrene charge-transfer state at 570 nm, and each of them possesses individual optical channel.

在粒径确定时,用一确定波长激发时,发射光谱中不同发射的最大强度直接决定于对应激发光谱在该波长下的强度。另一方面,超微粒粒径的大小同样影响着三个部分的相对强度。随着粒径的增大,吡唑啉环-芘环之间电荷转移态570 nm的荧光发射逐渐消失。

Billy Pilgrim's unhinged time—shifting, a mechanism for dealing with the unfathomable aggression and mass destruction he witnesses, is Vonnegut's solution to the problem of telling an untellable tale.

贝利的Pilgrim 's不稳定时移,一个机制来处理的深不可测的侵略和大规模杀伤性,他的证人,是冯内古特的解决问题的办法告诉了untellable故事。

Yantai University, Yantai,Shandong, 265005)Abstract : The vast Majority of jurisdictions in the United States have moved to regime of Comparative negligence in tort cases. In contrast with contributory negligence, where a showing of fault on the part of the plaintiff acts as a complete bar to recovery, in comparative negligence the jury apportions faults among the parties and the damages are assessed in proportion to the fault assigned to the defendants.

美国大多数的辖区在侵权案件上都采用&比较过失原则&,和&共同过失原则&相比,&比较过失原则&是指陪审团在进行事实认定时,在当事人之间分配过失,进而根据当事人的过失比例分配责任的承担,而共同过失原则则是强调原告的过失――不管在伤害的产生上占多大比例――都是被告免责的绝对抗辩事由。

The invention comprises the following steps: the user of the mobile communication terminal setting the power save mode, selecting the subdistrict search time and opening the holding period of the power source, judging and counting the exceeding time that the subdistrict power falling under the reference value according to the saved subdistrict search time, operating the power save mode, closing the working power source supplied by the battery and driving the timer with the minimum working power source if exceeding the saved subdistrict search time; opening the working power source, searching the subdistrict and maintaining the calling standby state if the overtiming.

包括步骤:移动通信终端的用户设置节电模式,选择小区搜索次数和打开电源的保存时间,以保存的小区搜索次数为根据,判断计数小区功率降到基准值以下的超过次数,如果超过上述保存的小区搜索次数,则运行节电模式,关闭电池供应的工作电源,以最小工作电源驱动定时器计时;比较判断结果是时间已超过时,打开工作电源,搜索小区,同时保持通话待机状态。

This paper introduces the software structure and real time process principle of real time NC system, according to the milling process character of NC system and the geometrical modeling method of computer simulation, presents a technique of subdividing roughcasts and data structures which applies to the computer simulation of the NC milling process; and in order to quicken the operating rate and enhance the reality of computer simulation, puts forward a logic algorithm of the 3D milling process of real time NC system which can display the effects of the computer simulation of 3D milling process of real time NC system dynamicly and efficiently in PC, such as the movement of tools, the elimination of materials, the shape changing of roughcasts.

刘景能,蒙艳玫(广西大学,530004)摘要:本文介绍了实时数控系统软件结构与实时工作原理,根据数控系统铣削加工的特点和计算机仿真几何建模方法,给出了适用于数控铣削加工仿真的毛坯离散细分方法和数据结构;为了加快处理速度和增强仿真效果真实感,提出了一种实时数控系统三维加工仿真的逻辑设计算法,即在单CPU机器单线程程序中使用普通软件循环和定时器模拟实现多线程,该算法可以在微机上动态显示高质量的铣削加工过程刀具的运动,材料的去除和毛坯形状的变化等数控加工三维仿真效果。

HDL reference, in which 1μg apoAI was thought of as one activity unit, was prepared by ultracentrifuging.

测定时,以超速离心制备的HDL参考品为标准,按每1μg apoAI为1个HDL活性单位,由参考品的光吸收值和相应的活性单位数,求出HDL生物活性标准曲线的双对数回归方程,并由样品的光吸收值计算HDL制剂的生物活性。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。