速度

The physical and chemical quenching rate constants of 5 different kinds of quenching agents and singlet oxygen were determined.

测定了五种不同类型猝灭剂与单重态氧的物理猝灭速度常数和化学猝灭速度常数。

This paper discusses the ultimate speed of debris in different sizes which sink in water, analyzing the characteristics of the sinkage and the factors having impact on their sinking speed as well as making comparison of the laws for debris and silty sand sinking in water.

研究了不同石碴颗粒在水中下沉的终极速度；分析了石碴的沉降特性和影响沉降速度的因素；对石碴和泥沙颗粒在水中的沉降规律进行了对比。

The different running speeds of the robot excited by sinusoidal wave and square wave were compared experimentally with each other, with the impact of the driving signal amplitude/frequency on the running speed verified.

在实验过程中，分别比较了在正弦波激励和方波激励下机器鱼的游动速度的差异，同时验证了驱动信号的幅值与频率对机器鱼游动速度的影响。

In this thesis, I summarize the theoretical calculation method, applied scope and notice of siphonic drainage system, and point out the advantage of siphonic drainage system compared with gravitation drainage system. In the archetype experiment study of siphonic drainage tube, I adopt different tube diameter and different structural height to survey the drainage volume and press in different place. I observe various kinds of flow state, and get chief factors which influence hydraulic peculiarity of system as the tube diameter or structural height, and find out the relevance of factor to flux. I apply CFD Fluent software and adopt standard k-ε model and RNG k-ε model, then use finite volume method and second-order upwind scheme to discrete numerical model, while coupling numeration of velocity field and press is based on SIMPLE. In the numerical simulation of curved part of tube, siphonic drainage tube experiment system and multi-outlet siphonic drainage system, I make research on internal velocity and press of system in different project condition by changing the tube diameter of curved part, negative press value in tube export and improving the quantity of water gutter. This thesis first adopts a method of combining archetype experiment and numerical simulation to study the siphonic drainage system, test and verify the validity of experiment and numerical simulation, and makefurther study on system, it solves the problems of limited testing conditions, and has a logical results, it can provide a valid method for optimizing and designing the drainage tube-net system. The conclusion have referring value for study and design of siphonic drainage system.

本文首先对虹吸式排水系统理论计算方法、适用范围以及注意事项做出总结，并分析了虹吸式排水系统的优势；再对虹吸式排水管道进行原型试验研究，采用不同管径不同立管高度，对系统流量、管道压强进行量测，观察了各种工况下的流态，对其水力特性进行研究分析，找出影响水力特性的落差、管径主要因素以及与排水量的关系；进一步应用计算流体力学Fluent软件，采用标准κ-ε模型与RNGκ-ε模型，计算过程应用有限体积法和二阶迎风格式对数值模型进行离散，速度和压力的耦合采用SIMPLE算法，分别对系统弯管段、虹吸排水管道试验系统、多斗虹吸式排水系统进行数值模拟分析，通过改变管段弯头处半径、管段出口负压值、增加雨水斗数对不同工况下系统内部的速度和压力进行研究；本文首次采用结合原型试验与数值模拟相结合的方法，对虹吸式屋面雨水排水系统进行研究，试验与模拟相互验证，并进行拓展，很好地解决了虹吸式屋面雨水排水系统由于试验条件限制问题，结果正确合理，为排水管网系统设计和优化研究提供了有效的方法，对工程设计有较好的参考价值。

Where the speed distribution is skew, it's better to quote the median speed.

在速度分布是扭曲的情况下，最好用中值速度。

The median velocity was calculated instead of the mean because it is fairly common to find outliers (e.g., breaking a ski pole during the race would make the velocity very low and aberrant).

这里计算的是速度中间值而不是平均值，这是因为中间值较容易发现异常值（例如，在比赛中打破一个滑雪杆会使速度变得异常低）。

The prior order of the influencing factors for the seedling-standing ratio of the tranplanter is height of throwing bowl, advancing velocity of the equipment, and slideway obliquity for testing with covering.

影响栽植器立苗率的主次因素，有覆盖物时是：滑道尾部的离地高度、机具前进速度、滑道倾角；无覆盖物时是：滑道尾部的离地高度、滑道倾角、机具前进速度。

The thermodynamics and the dynamics mechanism have been studied.The results show that it is advisable for the HCHO and NaH_2PO_2 as the reduction due to the electrode potential of the reduction is more negative than that of Cu~ 2+ from the analysis of data in thermodynamics.It is advantage for the reaction of electroless copper in the alkaline solution. According to the analysis of Tafel slope of a cathodal polarization curve,...

结果表明：从热力学数据分析看，还原剂的电极电位皆比铜离子负，用甲醛、次亚磷酸钠做还原剂还原Cu2+在热力学上是可行的，在碱性溶液中对化学镀铜反应有利；从阴极极化曲线的Tafel斜率分析看，Cu2+=Cu+步骤为阴极反应的速度控制环节；从镀液的旋转圆盘电极测试结果分析看，电子跃迁步骤H2CO-ad rdsHCOOH+1/2H2+e-为镀液中阳极反应速度的控制性步骤。

In order to enhance the slotter organization the working efficiency,often uses swings the guide rod organization form, according tooperation requirements definite travelling schedule speed changecoefficient k or extremely position included angle with thisorganization various sizes related, in order to enhance the slottermain body organization design the speed and the design quality,reduces the design cycle, enhances the product competitive ability,brings the slotter main body organization size the design to besupposed to use the most advanced design method.

为了提高插床机构的工作效率，常采用摆动导杆机构的形式，根据使用要求确定的行程速度变化系数k或极位夹角与该机构的各尺寸有关，为了提高插床主体机构设计的速度和设计质量，减少设计周期，提高产品竞争力，带插床主体机构尺寸的设计应该采用最先进的设计方法。

An I/O device suc h as a disk controller or LAN adapter runs at some speed and inserts enoug h wait states into the CPU bus to slow the processor down to match the device speed.

象一个磁盘控制器或局域网改编者那样的一台I/O设备以某速度运行并且插入足够等待状态进中央处理器总线减慢处理器匹配设备速度。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。