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Experimental results show that the experimental curve matches well with the theoretical curve, and genetic algorithm and neural network controller can control the 5-DOF finger exactly in real-time.

实验结果表明,手指指尖的运动实验曲线与理论曲线比较接近,说明采用遗传算法及神经网络控制能够实现对五自由度手指的较精确实时控制。

The spatial variability of an experimental field infiltration rate is examined by using the theory of time series of dynamic analysis method. The experimental field is 45m×50m, and had been irrigated by two sprinkler lines with different water quality in the last five years.

一、引言 80年代以前土壤科学和水科学工作者都用经典的统计方法研究土壤特性和多孔介质中水、热、气、溶质等运动特性在空间上的变异性。

In this article the catalytic spectrophotometric back titrimetry for determining trace manganese was studied,best experimental conditions were selected and experimental method was established.

本文研究了催化光度返滴定法测定微量锰的原理,找到最佳实验条件,确立了实验方法。

Beginning with wave equation, the paper has deduced the propagation of gauss pulses in single mode fiber and fiber grating transmission compensation. The characteristics of cascaded phase-shift gratings are discussed by numerical simulations of coupled-mode theory and T-matrix method. The experimental works and measurement results are shown in this paper. On the other hand, we have introduced the basic theory of EDFA and figured out the characteristics for EDFA at different conditions by numerical simulation. Some experimental results for EDFA are also presented here. In this article, you can find the influence on Optical Fiber Amplifier by Gain Tilt, especially, the negative effect on CSO in CATV transmission system.

论文首先从波动方程入手,对高斯脉冲在单模光纤中的传播演化及光纤光栅透射补偿进行了详细的研究;较系统地介绍了光纤光栅的耦合模理论,并将传输矩阵计算法用于计算级连相移光纤光栅的光学特性;重点介绍了作者在光纤光栅刻制及特性测量方面所做的一些实验研究工作;较系统介绍了EDFA的基本理论,计算出各种条件下EDFA的光学特性,并进行了一些实验研究;综合分析光纤放大器对光纤传输系统的影响,特别分析了光纤放大器增益不平坦对光纤CATV系统中CSO恶化的原因及其解决方法,并研究了光纤布拉格光栅在稳定980nm泵浦源输出功率和输出波长方面的应用;结合一个基于光纤光栅和光纤放大器的光纤用户接入网方案,对光纤用户接入网的若干问题进行了理论与初步的实验研究。

Experimental mice were exposed to Trypanosome evansi after injection by different doses of antigenic reservoir. The results showed that 20 μg dose produced 83% and 67% protection to 2 sample variations after 4 immunizations. However, 3 immunizing doses could not give good protection. No protective effects were detected when experimental animals immunized by single VSG exposed to isotype from different rabbits.

用不同剂量抗原库免疫小鼠后进行攻虫,结果显示:经四次免疫后,20μg 剂量对随机抽取的两个变异体100 条虫体的保护率分别达到 83%和 67%;改变免疫方法,经三次免疫后的保护效果不理想;用单一 VSG 抗原免疫小鼠,接种来自不同兔体的同型虫体,不能起到相应保护作用。

Experimental fan performance map is important for turbofan engine performance simulation, but the experimental data are always very limited.

涡轮风扇发动机的风扇特性图在试验的基础上绘制,是发动机建模、仿真以及研究发动机工作性能的重要依据。

There was not any distinct difference in flourrescence density between the experimental and control silkworms under the ultra-violet light in both of the 2 experiments; and with the excitation of ultra-violet ray, the germline cells of experimental silkworms in the experiment of 2002 emitted green fluorescence while the control did not.

紫外灯荧光检测,2次实验都未看到实验组与对照组家蚕间有显著差异,而2002年实验取家蚕4龄幼虫生殖细胞观察,有部分实验家蚤的生殖细胞在紫外光下发绿色荧光。

Experimental results indicate that for the polystyrene particle with a larger size, Umf changes with p-0.3, and for the sand particle with a smaller size, Umf changes with p-0.21. An empirical equation about Umf is proposed based on the experimental data: Umf=μdp ρg{[(34.15)2+0.05916×dp3 ρggμ2]12-34.15} It is found that the bed expansion height increases with the increasing of gas velocity, and increases with pressure for fixed value of UUmf, when the pressure exceeds 0.7MPa, the influence of pressure on the bed expansion height is weakened.

研究结果表明,大粒径聚苯乙烯颗粒的Umf与p-0.3成比例,小粒径石英砂的Umf与p-0.21成比例,并根据实验值拟合出压力下最小流化速度公式为: Umf=μdp ρg{[(34.15)2+0.05916×dp3 ρggμ2]12-34.15}床层膨胀高度随气速的增大而不断增高,在相同UUmf下床层膨胀高度随压力的增大而增高,在大于0.7MPa时,压力对膨胀高度的影响减弱。

Results Experimental group, 36 cases of patients cured, 32 cases of control group; the experimental group post-operative complications occurred in 2 cases, 11 cases of control group Conclusions To retain part of the uncinate process and opening up sinus surgery may be to maximize the retention of the nasal cavity, paranasal sinuses of the physiological function and structure of the integrity of the nasal cavity to be effective in the preservation of protective barriers to reduce the uncinate process behind the nasal cavity and paranasal sinuses by the direct impact of air flow.

对照组行经典的鼻内镜手术。手术后根据主观症状及复查时鼻内镜下局部状态对疗效做综合评价。结果实验组术后治愈36例,对照组32例;实验组术后并发症发生2例,对照组11例。结论保留部分钩突的鼻窦开放术,可最大程度保留鼻腔、鼻窦的生理功能和结构的完整性,可有效地保存鼻腔的保护屏障,减少钩突后方的鼻窦受到鼻腔气流的直接冲击。

The citric acid-producing strain Aspergillus niger 2363-2, was isolated and used in our research. The fermentation conditions were optimized as follows: sucrose as carbon source 8. 0-14. 0%, ammonium chloride as nitrogen source 3. 0-4. 0g/l, initial pH 2. 0, and cultural temperature 30℃. The influential factors of formation of spores were also studied, and a series of measures were taken to restrain the spore formation on the basis of our experimental results. With the consideration of the cultural environment and microbial cell itself, the factors affecting the duration of citric acid-producing activity of microbial cells were examined, and it is found that undissociated citric acid and the ageing of microbial cells are the main factors. The experimental results also show that partial replacement of fermentation broth can lengthen the duration of citric acid -producing acitivity of microbial cells.

筛选出了用于试验研究的柠檬酸发酵用菌Aspergillus niger 2363-2,确定了其最适发酵条件—碳源选用蔗糖,浓度8.0~14.0%,氮源为NH〓Cl,浓度3.0~4.0g/l,发酵初始pH值为2.0,培养温度30℃;讨论了分生孢子产生的影响因素,并通过试验提出了抑制分生孢子产生的措施;从分析微生物所处的环境和微生物本身两个方面出发,探讨了影响微生物菌体产酸活性持久性的因素,认为分子态柠檬酸和菌体本身的老化是影响微生物产酸活性持久性的两个主要因素,并提出采用部分置换发酵液发酵能延长微生物菌体的产酸活性。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力