计算时间

Calculating the area of a circle; calculated their probable time of arrival.

计算圆的面积；计算他们可能的抵达时间

The concentrations of CODcr and NH4+ vary from low to high, then from high to low in the process of refuse leaching, that is to say that there are three phases which are aerobian decomposition, facultative aerobian and anaerobian decomposition;(3)The time of landfill reaching to stabilize under the condition of filtration, for landfill of Jinqianpu, is at least 86 years if CODcr is regarded as a index; but is about 98 years when NH4+ as an index;(4)The column leaching experiment simulated is carried on interactivity between leachate and different lithologic characters, water-bearing media of different thickness. Some parameters can be determined by calculation, such as, the retained factor and hydro-chemical transportation rate of pollutants in suspended media, which quantitatively analyse the suspended soil capability of components purification and the pollution scope of water bearing media.

垃圾淋滤过程中和经历了一个由低到高、再由高到低的过程，即垃圾填埋过程中经历了好氧分解、兼性好氧分解及完全厌氧分解等三个阶段；（3）垃圾组分在淋滤条件下分解达到稳定的时间，对于金钱堡垃圾填埋场，若以作为考核指标，填埋场达到稳定化时间至少需要86年；若以作为考核指标，则填埋场达到稳定化至少需98年的时间；（4）对垃圾浸泡液与不同岩性、不同厚度含水层介质之间的作用进行了土柱淋滤模拟试验，通过计算污染质在包气带介质中运移的阻滞因子和水化学迁移率等参数，定量地描述了包气带土层对污染质的净化能力和污染范围。

Several calculation formulations have been established, which possess the advantages of that ①any of the final formulations is a linear algebraical equation system with respect to parameters of nodal displacement and velocity;②much higher accuracy can be obtained than the direct integration methods of dynamic analysis;③arbitrary number of time elements can be chosen when the space—time model is applied; and ④calculating procedures are quite simple since several time—coefficient matrices are introduced to the formulations.

当采用时间—空间有限元模型时，对时间单元的数目没有任何限制；(4)由于引入了时间系数矩阵，使计算过程大大简化，并且可引用已有的各种单元分析成果，具有很强的通用性。

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。

B Loss of working hours due to air travel time, half the honoraria rate provided always that air travel time exceeds 3 hours one way, transfer time is not included.

因长途飞行导致的工作时间损失，以服务报酬的一半计算(只适用于单程飞行时间3小时或以上，不含转机时间)。

The mathematical model by which the forming time can be precisely calculated is ratiocinated. This model shows that in SLS the scanning "delay" phenomenon can make the actual forming time greatly exceed the theoretical time, and the total number, total length of the scanning lines and the scanning speed have different effects on the scanning "delay".

本文推导出了SLS成型时间精确计算的数学模型，该模型显示在SLS加工中的扫描&延时&现象会造成实际成型时间远远大于理论时间，并且扫描线条数、扫描线总长和扫描速度对扫描&延时&有不同程度的影响。

Usually, the filter algorithm was completed byDSP in the automatic fingerprint verification hardware system, but it is proved to betime consumed, so in order to cut down the time of system, the filter algorithmimplementation based on FPGA which compensate the deficiency brought bysoftware compute is attempted in the paper.

因为在预处理和特征提取算法中滤波算法占用了大部分的处理时间，在自动指纹识别硬件系统中，即使用DSP 实现也要较长的时间，为缩短系统的处理时间，本文尝试了用FPGA 来实现滤波算法的新思路，以弥补软件计算的不足。

In order to contribute to analyse and compute easily setback moving devices on the projectile fuzes,and to make the fuze devisers be able to get the approximate acceleration curves with a few parameters such as tube length and muzzle velocity of the guns,the displacement-time curve and velocity-time curve of gun interior ballistic are fitted with the Logistic models,then the formula of projectile acceleration curves in bore are gotten by the derivation of the formula of fitting velocity-time curve.

为了便于炮弹引信后坐运动机构的分析和计算，能使引信工作者只根据身管长度和炮口速度等少量参数就能获得弹丸膛内加速度近似曲线，运用Logistic函数拟合火炮内弹道的位移－时间曲线和速度－时间曲线，再对拟合得到的速度－时间曲线求导便得到了弹丸膛内加速度近似曲线。

The calculation of the rolling time shall not account for the times required for reduced rolling speed due to material faults, operator's error, pause, repair, maintenance, test program change and the other downtimes, for which Seller is not responsible.

轧制时间的计算不包括由于材料的问题，操作人员的失误，暂停，维修，保养，测试程序的改变等浪费的时间和其他时间，卖方对此不负责。

In this study, World Elite Women 400 m Hurdlers for study, and through the published literature for the results of the world Elite 31 Women 400 m Hurdlers (53.923 s±0.668), 0-10-1 hurdle time and steps, 1-10 hurdle and the time between steps, 10 hurdle and the end time and so on. With the use of Microsoft Excel 2003 software to analyze raw data, then use SPSS11.5 software on the mathematical statistics data processing, summed up the results, analysis and comparative studies.

本研究以世界优秀女子400m栏运动员为研究对象，通过已公开发表的文献资料获得世界优秀女子400m栏运动员31人的比赛成绩(53.923 s±0.668)，0-1栏时间和步数、1-10栏各栏间时间和步数、10栏-终点时间等原始数据，使用Microsoft Excel2003软件对原始数据进行必要的计算，再运用SPSS11.5软件对有关数据进行数理统计处理，对结果进行归纳、分析与比较研究。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。