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The static model of torsion joint is based on that of bending joint. The effects of structure parameters inside air pressure, initial angle, rube average radius, rube shell thickness on the turning angle are analyzed and the following conclusions are drawn: the relationship between the angle of torsion joint and the inside air pressure is basically linear, the angle of torsion joint increases with the initial angle and rube average radius, the angle of torsion joint decreases while the rube shell thickness increases. The kinetic equation is built for torsion joint. Simulating experiment implies that the time of inflating and deflating process is extremely shorter than that of kinetic process. So the pneumatic process can be ignored in actual system design and control. The factors that affect the dynamic features of torsion joint, such as shell thickness of rubber tube, average radius, initial angle, connector's outlet area, moment of inertia and viscous damping coefficient, are analyzed and the following conclusions are drawn: the change of rube shell thickness has no effects on the dynamic process of FPA inside air pressure while greatly affects the turning angle of torsion joint; when the rube shell thickness is small, the torsion joint has a bigger turning angle, no overshoot and long risetime, when the shell thickness is big, the turning angle of torsion joint is small, but has high response speed, overshoot and low shock; when the rube average radius increases, the turning angle of torsion joint increases and the overshoot increases too; when the initial angle of torsion joint is big, the turning joint is big, the overshoot is small and shock is low, but the risetime is big; the connector's outlet area affects the dynamic process of FPA inside air pressure greatly, but has no effects on the dynamic process of turning angle; moment of inertia and viscous damping coefficient have no effects on the dynamic process of FPA inside air pressure, but affect the dynamic process of turning angle greatly.

在弯曲关节模型推导的基础上,建立扭转关节的静态模型,并分析了扭转关节内腔压力,初始转角,橡胶管平均半径,橡胶管壁厚等参数对关节转角的影响,得出扭转关节的转动角度与充入FPA内腔的压缩气体压力之间基本呈线性关系,扭转关节的转角随初始角度和橡胶管平均半径的增大而增大,扭转关节的转角随橡胶管壁厚的增大而减小的结论;建立了扭转关节的动力学方程,仿真实验表明FPA的充放气过程与扭转关节的动力学过程相比时间极短,在实际系统设计和控制过程中可以忽略不计;分析讨论橡胶管壁厚,平均半径,初始角度,气体节流口面积,转动惯量,粘性阻尼系数等因素对扭转关节动态特性的影响,得出橡胶管初始壁厚的变化对扭转关节FPA内腔压力的动态响应几乎没有影响而对关节转角的响应曲线影响比较明显,壁厚较小时,关节可以得到较大的转角,并且转角的响应曲线没有超调,但上升时间长,壁厚较大时,关节转角变小,响应加快,但是有超调和轻微振荡现象,橡胶管平均半径越大,得到的关节转角越大,但是转角响应的超调量也随之增大,FPA的初始角度越大,关节的转角越大,并且超调量减小,振荡减弱,但是上升时间增大,管接头出口面积的大小对关节FPA内腔压力的建立过程影响较大,但对关节转角的动态响应几乎没有影响,转动惯量和粘性阻尼系数对FPA内腔压力的动态过程几乎没有影响而对扭转关节转角有较大影响等结论。

The results showed that the maximum height of the capillary water rise of layered soil was mainly determined by the sand soil texture, position, thickness and their mutual relationship, and they also were closer connected with other soil texture in the profile.

针对目前层状土体剖面夹层土质对毛管水分最大上升高度的影响存在较大分歧,以沙土夹层为例,从土坡水动力学的角度,通过实验和理论分析,分不同情况对层状土城的毛管水最大上升高度进行了系统研究。

The course will start with an overview of the central and peripheral nervous systems, the development of their structure and major divisions. The major functional components of the CNS will then be reviewed individually. Topography, functional distribution of nerve cell bodies, ascending and descending tracts in the spinal cord. Brainstem organization and functional components, including cranial nerve nuclei, ascending / descending pathways, amine-containing cells, structure and information flow in the cerebellar and vestibular systems. Distribution of the cranial nerves, resolution of their skeletal and branchial arch components. Functional divisions of the Diencephalon and Telencephalon. The course will then continue with how these various CNS pieces and parts work together.

这门课将会从中枢和周边神经系统构造的发展和主要的分化点来概述,中枢神经系统的主要功能将会在复习中个别地说明:神经细胞体的断层以及功能性的分布、脊髓内上升和下降神经束的特征学和功能分布;脑干组织和功能要素,包括脑神经核、上升和下降神经束走向、含胺基酸脑激素细胞的分布、小脑和内耳前庭系统的构造和资讯传导流;颅神经的分布、骨弓和腮弓的演化;间脑和终脑的功能与分类;这门课将会探讨这些不同的中枢神经系统如何一起作用。

The results show that with the sea level rise, amphidromic point in this sea area tends to move to the southeast, and then coastal tidal ranges change present consequently different features ,that is,at the left side and bayhead coast near the amphidromic point they change evidently, and little at the right side and bayhead coast far away from amphidromic point.

将南黄海概化为一等深矩形海域,初步研究了在海平面上升3m 和 5m 条件下该海域旋转潮波系统的演化趋势,继而分析了沿岸潮差变化特征。初步分析研究表明:随着海平面上升,该海域 M2 分潮的无潮点有向东南方向偏移的趋势,受此影响,沿岸潮差呈现不同的变化特征,靠近无潮点的左侧及湾顶海岸变化明显,而远离无潮点的右侧及湾顶海岸则变化不大。

The results indicates, with the same level of other parameters, the TN removal can reach 80.0% and 70.9% with the control of dissolved oxygen under the levels of 0.3-0.6mg/l and 0.6-0.9mg/l, respectively; the TN removal upgrades from 80%, 83% to 84.1% with the decrease of sludge load in the system from 0.1, 0.07, to 0.05gCOD/gMLSS·d; the nitrogen removal only reaches 58% when C/N is 4, but can reach more than 80% when C/N is at or over 7, which indicates that the TN removal increases when higher C/N ratio; when HRT increases from 12h, 18h to 24h, the TN removal also increases from 78.6%, 82.0% to 83.0%; the TN removal average in the system increases from 75.6%, 78.5% to 83.0% with the increase of sludge age from 18d, 20d to 24d; the low oxygen conditions in the modified Orbal oxidation ditch model do not decrease the effect of COD removal, and the dissolved oxygen gradient with the distribution of 0-2-1mg/l in the system ensures the COD removal reaching the range of 80%-86%; and the phosphate removal, however, is not good enough, which varies from 40% to 50%, even lower than 35% in occasional situations, and the phosphate concentration in the outflow varies in the range of 1.28-2.38mg/l, which dissatisfies the discharge standard with the level of 1.0mg/l.

试验结果表明,在其它参数相同的情况下,将外沟道的溶解氧分别控制在0.3~0.6mg/l 和0.6~0.9mg/l 两个水平,外沟道中TN 去除率分别为80.0%和70.9%;系统中污泥负荷分别为0.1gCOD/gMLSS·d、0.07 gCOD/gMLSS·d、0.05 gCOD/gMLSS·d时,随着污泥负荷的降低,TN 的去除率却是上升的,分别为80%、83%、84.1%;本试验中,当C/N 为4时,仅能获得58%的脱氮率,当C/N 为7 或更高时脱氮率能达到80%以上,进水C/N 比值越高,总氮的去除率越高;在本试验中采取的水力停留分别为12h、18h、24h 时,外沟道中的总氮去除率随水力停留时间的增加而增加,分别为78.6%、82.0%和83.0%;当系统泥龄分别为18d、20d、24d 时,系统平均TN 去除率分别为75.6%、78.5%、83.0%,随着泥龄的增大TN 的去除率增加;改良型奥贝尔模型的低氧条件并没有降低COD 的去除效果,系统0-2-1mg/l的溶解氧梯度分布使得COD 去除率一般都在80%~86%之间;本试验中磷的去除效果不好,去除率基本在40%~50%之间,有的甚至低于35%,出水磷的浓度在1.28~2.38mg/l 之间,低于1.0mg/l 的出水排放标准。

The activities of superoxide dismut ase and glutathione peroxidase were elevated with increased dur ation of the supplementation. However, no differences between the LA and HA g roups were observed.

抗氧化酵素系统中的超氧化歧化酵素(superoxide dismutas e;SOD)和麸胱甘太过氧化酵素(glutathione peroxidase;GSH-Px)的活性均随著抗氧化营养素补充时间的增长而显著上升,但高剂量组和低剂量组的上升程度相似。

The results showed that O. fragrans seeds were desiccation-sensitive as the seed viability declined to 6% when the seed moisture content was reduced to 11.6%. The seed electrical conductivity increased with the declining moisture content, a sign, which was caused by increasing cell membrane cleavage. Superoxide dismutase activity decreased rapidly during desiccation; but peroxidase activity increased to the maximal value when dehydration for 12 h, then declined rapidly when seeds were dehydrated more than 12 h.

结果表明:'紫柄籽银桂'种子不耐脱水,种子生活力随着含水量的下降而降低,种子含水量下降到11.6%时,生活力仅为6%;自然脱水过程中,种子细胞膜系统受到损伤,相对电导率不断上升;种子内SOD活性随着含水量下降而呈总体下降的趋势;POD先呈波动性上升,脱水12 h时达到最大值,之后急剧下降。

Switch can be adjusted back up hand-held point of view (maximum 80 degrees) and leg drop angle (100 degrees);◆ foot bed lowest point from the ground 130mm, the highest point of the bed from the ground 680mm; also elevated bed of different heights;◆ bed in back with plexiglass plate, the user can seat on the bed for X-ray;◆ aluminum fence, can also choose to use push-pull PP flip rail or fence;◆ lift back, the waist angle of tilt, to prevent the sliding body;◆ by about 2 degrees of seat angle;◆ foot can be bent 100 degrees and can easily get out of bed from the bed and sat up and on;◆ foot horizontal position may rise higher than the height of 120mm;◆ with quiet casters with brakes and can be locked and lifted;◆ durability, operational quality, improved operating performance moving bed;◆ equipped with ABS headboard can be instantly demolished;◆ electric device of high quality fully enclosed permanent magnet DC control system;◆ low noise, high safety, long life;◆ new materials with polyester fiber mattresses;◆ can also choose to use low-rebound double-foam mattress or mattress waterproof material;◆ has good air permeability and durability.

可用手持开关任意调节背部上升角度(最大80度)和腿部下降角度(最大100 度);◆脚部床面最低处离地面130mm,床面最高处离地面680mm;还可升高床面不同高度;◆床体背部采用有机玻璃板,使用者可以座在床上进行X光检查;◆采用铝合金护栏,还可选择采用PP翻动护栏或推拉式护栏;◆抬升背部时,腰部有一定角度的倾斜,为防止身体的滑动;◆采用了约2度的座角;◆足部可以100度弯曲,能够很方便从床上坐起和上下床;◆足部可上升高度比水平位置高120mm;◆采用静音带刹车的万向脚轮,并能进行锁定和解除;◆耐久性、操作性优良,提高了病床搬运的作业性能;◆配有ABS床头板可瞬间拆卸;◆电动装置采用优质永磁直流全封闭式控制系统;◆噪音低、安全性高、使用寿命长;◆配有聚脂纤维新材料床垫;◆还可选择采用低反弹的双层海绵床垫或防水材料床垫;◆具有良好的透气性和耐用性。

First, the effects of magnetic RAM relaxation time and the rise-time of incident pulse signal on reflection signal are discussed, the relationship between the rise-time of incident pulse and relaxation time based on the energy of reflection signal is revealed. Then, the effects of magnetic hysteric, susceptibilities and saturation upon reflection signal are analyzed, the results reveal the reflection of RAM target and UWB signal design. In the meantime, dielectric relaxation time effect about dielectric RAM target is analyzed simply, and the effects of relaxation time and the width of incident pulse upon reflection signal are probed. Finally, a few RAM targets are measured in the chamber using the impulse radar experiment system which is developed by the team of anti-stealth impulse radar on Department of Electrical Engineering, National University of Defense Technology. The experimental results show the similarity of the rule of echos with the theory. From the compared results of different tagets, we concluded, compared with 15% wideband sinusoidal signal, the impulse signal has increased 10~12dB energy from the same loaded RAM target; this, in turn, shows the nonlinear effects of RAM to the echoes, and the potentiality of the impulse signal to RAM targets.

首先分析了磁性RAM的弛豫时间及入射脉冲信号的上升时间对反射信号的影响,从反射信号能量角度出发,给出了入射脉冲上升时间与弛豫时间的关系;接着分析了磁性RAM的磁滞特性、磁化率及磁化强度对反射信号的影响,给出了RAM目标辐射和有关UWB信号设计的一般性结论;其次,对介电RAM的弛豫时间效应作了简单的分析,探讨了介电弛豫时间及入射脉冲宽度对反射信号的影响;最后利用国防科技大学电子技术系&反隐身冲激雷达技术研究组&研制的冲激雷达实验系统,在微波暗室中对几种不同的RAM目标进行了测量,结果表明:其反射波形的基本规律与上述理论分析相一致;从各种不同目标回波的能量对比结果得出,涂覆RAM目标对冲激信号的吸收比15%带宽的正弦信号要小10~12dB,证实了RAM的非线性效应对回波的影响,也证实了冲激信号反隐身的潜力。

Author has introduced the process design method for steam tracing system of chemical piping ;has discussed the relative regulation,code and gist in the steam tracing design at home and abroad from aspects of diameter,quantity,and max.

介绍了化工管道蒸汽伴热系统的工艺设计方法;从伴管的直径、数量、最大允许长度、U型弯累计上升高度以及伴管、疏水器、紧固件的材料等方面论述了国内外蒸汽伴管设计相关规定、规范和要点;结合工程实例,论述了伴管蒸汽的引入和伴管敷设时相关注意事项,以及在最大允许范围内出现袋形累计上升的高度值问题。

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推荐网络例句

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国,慢性酒精中毒,肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题,你可以随时联系我。

Very pretty, but the airport looks more fascinating The other party wisecracked.

很漂亮,不过停机坪更迷人。那人俏皮地答道。