查询词典 reciprocating motion

In addition, because motion vectors must be estimated in the process of region's motion parameters estimation, this paper discussed the theory and general methods of two-dimensional motion estimation and proposes a fast motion estimation algorithm based on the prediction of neighbour block's motion vector.

此外，由于在区域的运动参数估计过程中涉及到对运动矢量的估计，因此本文还讨论了二维运动矢量估计的原理和一般方法，并提出了一种基于邻域子块的运动矢量预测的快速运动估计算法。

We performed a simulative test, which confirms that wavelet analysis can separate annual wobble and Chandler wobble. Our results show that this method can be used in astronomical geodynamies effectively. This paper is divided into two parts. The first is about statistic characteristic of polar motion. Polar motion includes secular motion, long period fluctuations, Chandler wobble, annual wobble and high frequency wobble. The secular motion is 3.4mas/year and towards 760W meridian. Long period fluctuations have difference periods in x-axis and y-axis. They are 31.7-year and 24-year in x-axis and 28.5-year and 22.9-year in y-axis. These 2~? decades fluctuations have an amplitude of about 30 mas , and are very nearly linearly polarized, with the observed motion of pole being almost entirely along a line between 360E and 1440W. There is a 55.4-year wobble whose amplitude is 9 mas. The amplitude of the interannual fluctuations is about 4? mas. The amplitude of long period fluctuations decreased after 1970. The annual wobble is a steady wobble. It retrograde wobble is only 1/20 of prograde wobble in amplitude.

本文的工作主要分为两部分：第一部分是通过分析POLE97序列，我们对极移的统计特性有了一个较全面的认识，极移主要包括趋势项、长周期项、Chandler项、周年项和高频项：趋势项的方向是西经76°，速度为每年3.4mas；长周期项中Markowitz 项在X、Y两个方向有不同的周期，它们分别是：X方向的两个周期是31.7年和24 年，Y方向的两个周期为28.5年和22.9年它们叠加在一起是一个线偏振运动，最大振幅约为30mas，偏振方向在西经144°和东经36°之间；极移的长周期波动中还存在一个 55.4年周期的圆周运动，振幅约为9mas；十年尺度变化的振幅在4～6mas之间，在Y 方向十年尺度的成份比较多，它们的周期在X方向和Y方向不是对应的；从七十年代年开始长周期变化的振幅明显降低；周年项是一个振幅稳定的摆动，在X、Y两个方向的振幅略有差别，逆向运动振幅大约为顺向运动振幅的1/20；Chandler摆动的振幅自1900年以来经历了几次较大的变化，其中包括1915年和1955年两次极大值，振幅分别达到0&。25和0&。28，以及1925～1940期间小于0.09的过程，Chandler项在X、Y 两个方向的振幅几乎完全相等，其逆向运动振幅不到顺向运动振幅的1/50。

Power-law fluid is used to describe the Non-newtonian rheological property of the produced fluid in a polymer-driving well; the governing equations, boundary and initial equations of power-law fluid in eccentric annuli with the inner cylinder reciprocating axially is established in bipolar coordinates system; formulas of instantaneous flow rate and stress distribution on the outwall of the inner cylinder of the unsteady flow of power-law fluid in eccentric annuli with the inner cylinder reciprocating axially are established.

在理论上，用幂律流体模型描述了聚合物驱油井产出液的非Newton流变性；建立了双极坐标系下幂律流体在内管做轴向往复运动的偏心环空中非定常流的控制方程及边界条件和初始条件方程；建立了双极坐标系下幂律流体在内管做轴向往复运动的偏心环空中流动时瞬时流量和流体在内管壁上的压力分布计算公式。

In the reciprocating pump, the suction valve and exhaust valve is a very important component and is vulnerable parts of their work a direct impact on the limit pressure reciprocating pump, extraction rate, power consumption, as well as the reliability of operation.

在往复泵中，吸气阀和排气阀是非常重要的部件且是易损部件，它们工作的好坏直接影响往复泵的极限压力、抽气速率、功率消耗以及运行的可靠性。

Kept in accordance with the main livestock and poultry can be divided into:(1) pig farm equipment, mainly including the pigsty (sub isolated defecating type pigsty, ditches addition to manure type pigsty, some gap-type pigsty floors, full-seam floor and childbirth pigsty pigsty and other five), feeding equipment (with screw-type conveyor, reciprocating scraper type, scraper ring type, ring-chain plate and dilute feed, type and other types of pipeline transportation, as well as automatic feeding trough and a variety of feed trucks) and a drinking fountain ( There Duckbill type, cup type and nipple-type 3 type), in addition to fecal equipment with except feces forklifts, scraper-type reciprocating equipment, and water will, inter, inter dung manure equipment, etc.

按所饲养的主要畜禽可分为：（1）养猪场设备，主要包括猪栏（分隔离排粪式猪栏、明沟除粪式猪栏、部分缝隙地板式猪栏、全缝地板猪栏和分娩猪栏等五类）、喂饲设备（有螺旋输送式、往复刮板式、环形刮板式、环形链板式和稀饲料管道输送式等类型，还有自动饲槽和各种饲料车）、自动饮水器（有鸭嘴式、杯式和乳头式3个类型）、除粪设备（有除粪铲车、往复刮板式除粪设备和水冲除粪设备等）；（2）养牛场设备，主要有拴系、饲喂、饮水、除粪、挤奶、牛奶冷却、牛奶输送等设备；（3）养羊设备，主要是草场围栏、羊圈及剪毛机；（4）养鸡场设备，包括鸡笼、喂饲设备、饮水设备、除粪设备、孵化和育雏设备、集蛋装置和鸡粪热干燥设备等；（5）养鸭场设备，主要是自动填鸭器。

According to the biaxial reciprocating gear-driven principle that presents by professor He guo jin in this thesis, the biaxial reciprocating cylinder gear reducer has been designed and interiorinput power of this reducer is forty watt.

本文根据何国金教授提出的两平行轴间多级圆柱齿轮来复传动原理，设计了一台两平行轴大速比来复传动圆柱齿轮减速器，其输入功率为40w，这种减速器中的双联齿轮与轴之间为空套联接，双联齿轮所在的轴段只受弯矩，不受扭矩；也就是说，输入轴只有靠近电动机一端的20mm长度上受扭矩，输出轴只是在靠近外伸输出端与其键联接的齿轮和外伸端部之间承受扭矩，因此轴的扭转刚度高。

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The company mainly produces chemical process pumps, high pressure reciprocating pump, piston metering pumps, hydraulic diaphragm metering pumps, mechanical diaphragm metering pumps, gear pumps, meshing, the meshing gear pumps, small flow pump, single screw pump, double-headed Screw pump, three screw pump, shielding pump, magnetic pumps, liquid pumps, boiler feed water pump, steam reciprocating pump, fluorine plastic pump, slurry pumps, water treatment and medicine, environmental protection equipment, industrial pumps accessories, annex Buffer, back-pressure valve, filter, check valves, safety valves, instrumentation, and other on-line

公司主要生产化工流程泵、往复式高压泵、柱塞计量泵、液压隔膜计量泵、机械隔膜计量泵、内啮合齿轮泵、外啮合齿轮泵、小流量离心泵、单螺杆泵、双头螺杆泵、三头螺杆泵、屏蔽泵、磁力泵、液下泵、锅炉给水泵、蒸汽往复泵、氟塑料泵、渣浆泵、水处理加药系统、环保设备、工业泵配件、附件缓冲器、背压阀、过滤器、止回阀、安全阀、在线检测仪表等

The high pressure pump has one or more reciprocating pumping plungers (14) and a pumping plunger actuator (62, 48, 66) driven by the drive shaft for reciprocating each pumping plunger to provide alternating intake and pumping phases of operation of the high pressure pump, at a frequency determined by the rotational speed of the drive shaft, for respectively receiving an intake charge of fuel and delivering fuel at high pressure for fuel injection.

高压泵具有一个或多个往复移动的泵送柱塞（14）和一个泵送柱塞驱动装置（62，48，66），其由驱动轴驱动，以便往复移动每个泵送柱塞，从而在由驱动轴转速决定的频率下提供高压泵工作的交替的吸入和泵送相，以便分别接受燃油的吸入量和为燃油喷射高压输送燃油。

An anti-rotation reciprocating drive apparatus for a reciprocating saw utilizes a wobble plate assembly that includes a drive shaft and an elongated arm with an interface structure for engaging a spindle.

一种利用摆板组件的往复锯的防旋转往复驱动装置，摆板组件包括驱动轴和带有为连接心轴的接触面结构的细长臂。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。