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Elasticity plunger resume original dimension, the gap between plunger and pump barrel was increased downstroke.Leakage of sucker pump with automatic compensate gap was decreased and pump efficiency was increased upstroke, friction between plunger and pump barrel was reduced downstroke.

下冲程，弹性元件恢复原尺寸，柱塞与泵筒之间的间隙增大，从而实现上冲程减小泵漏失量，提高泵效，下冲程降低了柱塞与泵筒之间的摩阻。

In order to compensate for the difference in the height of the cold end center section and the hot end center section and the resulting difference in the distance between the hot and cold center section and between the hot and cold connecting plate duct assemblies, the main support pedestal panels include offsets which extend downwardly along the sides of the cold end center section to meet with the cold end connecting plate duct assemblies.

为了补偿冷气端中心部分与热气端中心部分的高度差，以及由此带来的热气和冷气端中心部分的距离差以及冷热气端连接板管道系统间的距离差，主承重支座板上有一偏移量，它沿着冷气端中心部分的侧面向下延伸直到与冷气端连接板管道系统相连。

Flying monlchamus refers to the business card printing and membership card-making process, the ink in a rotating rollers at the time of separation between the ink silk draggle due to the relationship between surface tension into a live small particles were turning the business card printing and membership card making-extraditedto in space flight.

飞不朱是指制卡和会员卡制作历程洋，油不朱在回旋扭转的不朱辊之间，当别离时不推断的不朱丝由于暗地压力的干系变不败带电的小颗粒而被运转着的制卡和会员卡制作机所逐不入在不时间飞散的本体。

Because of the difference between the system of the traditional Chinese operas and Western realistic drama, the "dramaticism" between them is not the same.

中国传统戏剧和西方写实戏剧由于体系之不同，因此，两者的"戏剧性"也随之不同。

Correlation analysis of the two lists of the probe signals are done by using the statistic method. Void wave instantaneous velocity probability distribution graphs and the graphs of a relation between void wave average velocities and fluxes are obtained. The comparison between the fitting lines and the theoretical formulation of void wave velocity is drap.

通过统计的方法对两列探针获得的局部瞬时空隙率信号进行相关性处理，得到不同流量和不同外加扰动下空隙率波瞬时波速概率分布图及空隙率波平均波速和流体流速关系图，并对空隙率波平均波速拟合直线和空隙率波波速理论公式进行比较。

To move between options in the selected drop-down list box, or to move between some options in a group of options

在所选的下拉式列表框中的选项之间移动，或在选项组的某些选项之间移动

In this paper, NO is generated by negative pulsed discharge between needled and plate electrodes in dry air at the atmospheric pressure, Some of the important parameters affecting concentration of NO and NO2 have been investigated. These include the pulsed discharge frequency, the distance between electrodes and electrode polarity.

脉冲电弧放电是产生医用吸入性NO 的一种新方法，因此，本研究采用负脉冲电弧放电，以大气压下的干燥空气为原料，研究了放电频率、电极间距和电极极性等参数对NO 和NO2浓度的影响。

Based on the dual relation between flow graph and potential graph,flow graph represent the trusses and potential graph represent the mechanisms,obtained the duality relation between trusses and mechanisms.

基于流图和势图的对偶关系以及基尔霍夫定律，用流图表示桁架，势图表示机构，建立了桁架和机构的对偶关系。

Then we prove the one-to-one corresponding relation between 3-coloring of inducing four regular graph and 4-coloring of maximal planar graph and find out the relation between three colors of inducing four regular graph and three dual bi-chromatic subgraph of maximal planar graph.

本文给出了极大平面图的导出四正则图的两种构造方式、等价性及性质，证明了导出四正则图的三着色与原极大平面图四着色的一一对应关系，并且找出了导出四正则图的三种颜色与原极大平面图四着色的三组对偶二色子图之间的关系。

In the improved algorithm, two matrices describing the relation between transfer stations of all levels with angular points of grids and the relation between two adjacent levels transfer stations were established to delete constraints and compress greatly variables of the model; an evolutionary algorithm based on evolutionary similarity was applied to mix the basic properties of global and local search; the selfadaptive delta variation operator, dual arithmetic crossover operator, peakjump operator were used to improve the behaviors of artificial fishswarm algorithm.

在算法中建立了各级中转站与网格点关系矩阵和相邻两级中转站间的关系矩阵来消除约束条件和压缩变量数；使用了基于相似性的演化算法来融合全局搜索和局部搜索；使用了自适应delta变异算子、双算术交叉算子、峰跳操作算子等多种算子改进人工鱼的各种行为。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。