查询词典 optimum

So in this paper based on the characteristics and the optimum state theory of the vehicle, some kinds of control schemes are compared and discussed, and the fuzzy PID control scheme is adopted at last. The relation between air-cushion pressure and fan rotational speed on the optimum driving state is studied. The cushion pressure is used as controlled variable and the fan revolution is used as regulated variable. And transducer and fan motor are actuators.Based on the structure and operating properties of half-tracked air-cushion vehicle, the control system scheme and structure are presented. A control scheme using the self-tuning PID fuzzy logical controller is adopted. Fuzzy rules are set up and some researches have been done for fuzzy tuning method. At the same time the real-time measurement scheme by computer control is proposed, and electric circuits are designed. In the control system of half-tracked air-cushion vehicle cushion pressure P〓 is used as controlled variable and the fan speed n〓 as regulated variable.

因此本文以半履带式气垫车的特性和最佳工作状态理论为指导，通过对各种控制方法的比较与探讨，提出采用模糊PID控制方案，并且研究了在最佳工作状态下垫压及风机转速的关系，提出气垫压力作为控制参数，变频器和风机电机为执行机构，风机转速为调节量；主要进行了自整定模糊PID控制器的设计，研究了自整定PID模糊控制器的实现方法，编制了模糊控制规则，制定了模糊控制参数查询表，并分析了影响自整定模糊控制器相关的影响因素，确定了模糊控制表；为了实现半履带式气垫车的自动控制，还提出了计算机模糊控制系统的原理与结构，设计了相应的测量电路与控制软件。

The results show that:1 the optimum addition of albite is 3 %.2 8 % is the optimum addition of quartz.

钠长石的加入量以3%为宜；石英的加入量以8%为宜。

In this paper, through a series of experiments, two series of quaternary-ammounium Gemini surfactants were synthesized, namely the pair alkylene double quaternary ammonium salt surfactant m-s-m·2Br and the pair the alkylene double quaternary ammonium salt surfactant -s-·2Br. We has carried on the attribute with the infrared spectrum to its structure, and to affected the factor which the synthesis pair the alkylene double quaternary ammonium salt surfactant responded to carry on the discussion. We has discovered the synthesis pair the ethylene double quaternary ammonium salt surfactant m-2-m·2Br optimum condition: The bromo alkane and a tetramethyl ethylene diamine mole of ratio is 3.0: 1.0, makes the solvent by the ethyl alcohol, 80℃ under responds for 48 hours in the backflow temperature; Synthesis pair alkylene double quaternary ammonium salt surfactant 12-S-12 ·2Br optimum condition: 12 tertiary amine and 1, 3- propylene dibromide (1, 4- two bromines butane) a mole of ratio is 2.2: 1.0, makes the solvent by the ethyl alcohol, responds for 48 hours in the constant temperature 80 ℃ under backflow.

本文通过一系列的实验，合成了两个系列的Gemini型表面活性剂，即双烷撑双季铵盐表面活性剂m-s-m·2Br和双烷撑双季铵盐表面活性剂-s-·2Br，用红外光谱对其结构进行了表征，并且对影响合成双烷撑双季铵盐表面活性剂反应的因素进行了讨论，找出了合成双乙撑双季铵盐表面活性剂m-2-m·2Br的最佳条件：溴代烷与四甲基乙二胺的摩尔比为3.0：1.0，以乙醇作溶剂，在回流温度80℃下反应48小时；合成双烷撑双季铵盐表面活性剂12-s-12·2Br的最佳条件：十二叔胺与1，3-二溴丙烷(1，4-二溴丁烷)摩尔比为2.2：1.0，以乙醇作溶剂，在恒温80℃下回流反应48小时。

Futher results showed that: the optimum growth temperature for the 4 lactic acid bacteria was 30℃; and the pH 3.5~4.0; all 4 lactic acid bacteria could grow at the medium with 10% NaCl, and the optimum range was 2%~6% They were aerotolerant anaerobe; They showed certain inhibition on E coli..

进一步测试表明：4株乳酸菌在30℃培养时，生长最好；在pH3.5~4.0时生长良好；4株乳酸菌在10% NaCl的环境中均能生长，其中以2%~6%的NaCl浓度内生长最适宜；属兼性厌氧菌；对大肠杆菌产生一定的抑制作用。

Furthermore, the metallic glass samples are prepared by vacuum injection method and the rationality of above-mentioned relationships and RBF models is directly verified. It is shown that there are extremum phenomena between the Rc andΔd ,Δe and v respectively. However, the positions of the extremum are different from different alloy systems and the extremum phenomena may be related to the optimum composition region and the optimum additive quantity. More elements in the alloy are in favor of the improvement of the GFA. And as for the high GFA alloy, the atomic percentage, atomic radius difference and atomic electronegativity difference are harmoniously matched.

d、Δe和v与临界冷却速度Rc的关系中都出现极值现象，对于不同的合金体系，极值出现的位置不同；金属玻璃的最优成分范围以及各种添加元素的最佳添加量行为，可能与此极值现象相关；合金中包含的组元数目多有利于提高其玻璃形成能力，玻璃形成能力强的合金，其各个组元的原子百分含量、组元原子半径差及其电负性差之间的搭配是很和谐的；融合建模的合金系之间包含的主要组元数量和种类越相近，所建立的模型的可靠程度越高，其预测结果与实测结果越吻合。

This paper introduces the optimum design idea widely used in mechanics especially in automobile at present, Firstly explicating one particular optimum method for this automobile steering gear design.

摘要本文首先介绍目前在机械行业尤其是汽车行业中应用较广的最优化设计思想并且针对本次汽车转向梯形臂的设计的一种具体方法作了详细的阐述。

This paper exploits the optimum design idea widely used in mechanics especially in automobile at present, and explicating one particular optimum method for CA1091 steering gear design.

摘要本文利用在机械行业尤其是汽车业中应用较广的最优化设计思想并且针对北京CA1091转向梯形臂的设计作了详细的阐述。

With the object of optimum bearing capacity and optimum working conditions, and under meeting reliability and certain conditions, the mathematical model of hydrodynamic lubricant radial journal bearing was established for reliability optimum design.

在满足可靠性及其他要求的条件下，以获得最佳承载能力与工作状态为目标，建立了流体动压润滑向心滑动轴承的可靠性优化设计数学模型，并列举了计算示例。

With rice cultivars Yangdao 6and Wuyujing 3 as test materials, the effects of relatively high temperature (RHT, mean temperature 30 ℃) at grain-filling stage on the starch viscosity profile and magnesium and potassium contents of rice grain were studied in a phytotron. Four temperature treatments were installed, i.e., RHT at whole GFS, RHT at early GFS and optimum temperature at later GFS, optimum temperature at early GFS and RHT at later GFS, and optimum temperature (CK, mean temperature 23 ℃) at whole GFS.

选用武育粳3号和扬稻6号两个水稻品种，利用人工气候室在水稻灌浆结实期进行控温试验，设置全结实期相对高温、结实前期相对高温、结实后期相对高温、全结实期适温（对照，日均温23℃）对照4个处理，探讨结实期不同时段相对高温（日均温度30℃）对稻米淀粉粘滞性谱和Mg、K等元素含量的影响。

Results: The ratio of Lactobacillus bulgaricus and Streptococcus thermophillus is 1:1. The optimum formula of the expanded fermentation is: tomato and carrot juice 3:7, glucose 2%, NFM 4%, and vaccination 3%. The optimum formula of the fermented liquid is: tomato and carrot juice 3:7, fermentation temperature 41℃, fermentation time 24h, and the amount of vaccination 3%. The optimum formula of fermented beverage is: sucrose 5%, citric acid 0.02%, CMC 0.2% and xanthic gluc 0.03%.

结果：用保加利亚乳杆菌和嗜热链球菌按1：1比例作为菌种；种子扩大液的最佳配方：番茄、胡萝卜混合汁配比3：7，2%葡萄糖，2%脱脂乳，3%接种量；发酵液最佳配方：番茄、胡萝卜混合汁配比3：7，发酵温度41℃，发酵时间24h，接种量3%；发酵饮料调配最佳配方；发酵原液中添加蔗糖5%，柠檬酸0.02%，耐酸羧甲基纤维素钠0.2%，黄原胶0.03%。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。