标准试验

This paper studies the main geometrical parameter such as angle, height, width, stagger and the upper width in dentation and trapezoid flow path, firstly, uses the single-phase numerical simulation of the computational fluid dynamics technique to analyse the influence of different geometrical parameter on discharge coefficient and flow state exponent of drip emitter. Secondly, uses the two-phases numerical simulation of CFD (1% sand content ) to analyse the influence of the above mentioned geometrical parameter on the contribution regulation of sand and anti-clogging performance. Thirdly, uses the PIV （ particle Tracking Velocimetry ） technique which can see the small-scale flow path to observe and test the trajectories and velocities of solid particles in labyrinth flow path, and analyses the basic factors which can influence the movement characteristic of solid particles and the flow state in flow path.

本文以齿形流道、梯形流道为主要研究对象，以流道转角、流道高，流道宽、偏差量及梯形流道上底宽为主要结构参数，首先应用 CFD 单相流数值模拟技术对不同结构参数灌水器流道水力性能进行模拟，分析了不同结构参数对流态指数和流量系数的影响，其次，应用 CFD 两相流（含沙量为1%）数值模拟技术分析了结构参数对含沙量分布规律和抗堵塞性能的影响，然后，应用 PIV 可视化测试方法测试了固体颗粒在流道内运行轨迹及速度，分析了影响固体颗粒运动特性及流道内流体流态的基本因素，最后，对上述流道结构形式通过模具加工及滴灌带试制，进行了标准化测试（ GB/T 17187-1997 农业灌溉设备滴头技术规范和试验方法与 ISO 标准 ISO /TC23 /SC18 /WG5N4短周期堵塞测试程序），测试结果验证了 CFD 模拟结果，并提出了迷宫结构流道灌水器的抗堵塞设计方法。

The thesis first presents the definition and deciding theorem of different match types and derivability, then proposes corresponding deciding algorithms and query processing algorithms for different network links taking their features and optimization goals into account. Using these algorithms, associative access can be supported by the client cache more efficiently. In order to study the performance of our work, we have conducted a series of simulation experiments.

本文给出相应的模拟模型系统以及工作负载的描述，把基于本文提出的强、弱连接下查询处理、替换和一致性维护策略的缓存的数据库系统与标准客户—服务器数据库系统、基于传统缓存的数据库系统进行比较，试验测试了在不同网络连接，不同工作负载，不同缓存大小下各个系统的性能。

Therefore, under such drastic competition mechanism as victory or defeat, the robot soccer game would definitely devaluate as a standard test platform without the real time requirement.

所以说，在机器人足球这种激烈对抗竞争的机制下，如果没有实时性要求也就使得机器人足球失去了作为标准人工智能试验平台所应有的意义了。

To validate heat treatment requirement of ISPM 15 to disinfestation of Pine wood nematode in wood packaging material,lumber and block made from Masson Pine with different moisture content,which was naturally infested with Pine wood nematode and sawed to 3 kinds of size,was heat treated under the hot air with the temperature rang of 65~85℃ and Relative Humidity of 50%~90% to reach the core temperature of 56℃ and more than 30min duration.

使用温度为65～85℃、相对湿度50%～90%的热空气，对不同规格和含水率的携带松材线虫的马尾松木板进行热处理验证试验，结果显示，当木材中心温度达到56℃并持续30min以上，10cm×10cm×10cm木块、5cm厚度木板以及高含水率10cm厚度木板中线虫死亡几率值达到9的要求，验证了国际植物检疫措施标准第15号所推荐的热处理技术指标对杀灭松材线虫的有效性。

The shock wave has made a nearly standard dodecahedron pattern on the surface of centre sphere. This pattern is the result of shock waves interaction from two adjacent detonating spots, and its position shows how the detonating of two adjacent spots acts, synchronized or not. The nice dodecahedron stroke patterns on the surface of recovered centre sphere indicate that this detonating method has good synchronization and spherical converging shock-wave.

通过试验，由十二个起爆点发出的爆轰波通过相互作用在回收球体的表面留下了近乎标准的正十二面体刻痕图案，球体表面的每一道刻痕都是相邻两个起爆点所发出的爆轰波相互作用的结果，每一道刻痕与相邻两个起爆点的位置关系反映了该两个起爆点的起爆同步性情况。

The resolution of the two peaks is between 0.83 and 1.11. There is no particular interaction between xylooligosaccharides and Bio-Gel P-2, and the molecular weight is the dominant factor governing the separation in this system. The purity of xylobiose to xylohexaose separated by once time is 86.94%, 82.90%, 88.30%, 64.20% and 77.89 %, respectively. xylooligosaccharides, gel permeation chromatography, polyacrylamide gel, separation

本文以Bio-Gel P-2为层析介质，以FPLC为层析系统对酶解玉米芯制备的低聚木糖进行分离研究，为后期分离低聚木糖单一组分并将其用于生理活性的研究提供了理论依据。1材料与方法1·1试验材料木二糖标准品购于Sigma公司，低聚木糖由南京林业大学生物化工

In order to solve some problems that the driving axle housings conformed to the demand of conventional design method,but it didn't accord with their professional standard in bench test.Based on the former study results,this paper has proposed a CAE design method for the driving axle housing.

为解决某些驱动桥壳虽然满足传统设计要求、但在台架试验中不符合行业标准的问题，在对驱动桥壳研究的基础上，提出了基于CAE的驱动桥壳设计方法。

The test can proves that it is credibility to take the driving axle housings bench test demand as a check standard and to optimize the driving axle housing structure parameters in design method.

通过实例验证，所提出的以桥壳台架试验要求为校核标准并包括结构参数优化的桥壳设计计算方法是可信的。

According to the method D1102-84,which is the normative method of biomass ash measurement,approximate analysis has been done with the straws of wheat,rice,corn,bean,durra and cotton as sample.

按照D1102-84灰分标准测定方法，对小麦、水稻、玉米、黄豆、高粱、棉花等几种秸秆样本进行了工业分析；在ZRC2000智能灰熔点测定仪上对不同秸秆进行了灰熔点测试；在不同的温度和停留时间下，在马弗炉上对不同秸秆进行了热灼烧试验。

In order to quantify and determine the dustiness of fine and nanopowders, the standard rotating drum tester was used to determine the dustiness of two nanopowders: nano-TiO2 and fine ZnO, in the standard 1-min tests.

为了评估奈米粉体与细粉体的扬尘特性，本研究使用欧洲标准化委员会公布的标准粉体扬尘测试方法－旋转腔试验机法，测试德国Degussa公司制造的TiO2奈米粉体(型号为P25)与国内慈阳公司生产的A级ZnO细粉体的逸散特性，实验时间为1分钟。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。