上下

Studied pumping well system in this article, the intermediate power transmission parts uesed flexible rod, the downhole assembled rod pump, the ground driving device would transform up and down reciprocating motion into rotating motion. With own mechanism rounded trip for the downhole flexible rod and pump. Wellhead polished rod changed common stell for flexible polished rod. It was a innovation in theory study and craftwork method. It was a remarkable feature in this article, because these innovations were not studied and attempted for prehuman.

本文所研究的抽油系统，中间动力传动部件采用柔性抽油杆，井下配套杆式抽油泵，其地面驱动装置将传统抽油机驴头的上下往复运动变为旋转运动，并且能够利用自身结构对井下柔性抽油杆及泵体实现起下作业，井口光杆也由普通钢质光杆变为柔性光杆，这是理论研究和工艺方法的创新，这些创新都是前人所没有研究和尝试的，是本文的一大显著特点。

Divided by mudstones of the middle and lower parts in the Sha-3 Member, two superimposed fault systems are formed in the Cenozoic strata in the western sag, including long-term active faults, presenile active faults and late-developed active faults, which, in origin, are extensional normal fault, strike-slip fault, strike-slip normal fault, strike-slip reverse fault.

结果表明：以沙三段中下部大套泥岩为界，西部凹陷形成了上下叠加的2个断裂系统，主要发育长寿型、早衰型和后生型3种类型断层和张性正断层、走滑断层、走滑正断层和走滑逆断层4类不同性质断层。

The Company was founded in 2004 in Shenzhen City Komeito town, after 2 years the company from top to bottom Tongren tireless efforts and struggle, and now owns an offset printing press, slitter, cutting machine bag machines.

本公司2004成立于深圳市公明镇，经过2年多来公司上下同仁的不懈努力与奋斗，现已拥有胶版印刷机、分条机、切袋机等多台机器。

FEATURES: Double presser foot. Lower and upper feed to get uniform and beautiful outline.

特点： 双押脚与送步牙交线上下送料，确保缝目的均匀美观。

Based on the analysis on primary wave frequency characteristics, some conclusions can be obtained: there were variations obviously for the characteristics of primary wave frequency spectrum in fracture zones, such as the dominant frequency shifted towards the low frequency, at this location the amplitude increased rapidly, and there were significant differences from the surrounding unbroken rocks.

通过对纵波频谱特征的分析得到这样的认识：对于断裂构造，纵波的频谱特征有着明显的变化，如纵波的主频位置向低频偏移，在低频位置上其幅度急剧地增大，与上下未破碎的岩层有着非常明显的差别。

And the self-shrinking generator is a typical model of the clock-conctolled During the past ten years or more, some researches have been done on the period and linear complexity of the self-shrinking sequence obtained from an m-sequence which is generated by a primitive polynomial f over GF(2), degree=n , in the related academies.

近十余年，国际上已对由n级m-序列导出的自收缩序列的周期和线性复杂度做了研究，给出周期的上下界，其中所给的下界为2~([n/2])，由此也给出了线性复杂度的下界为2~([n/2]-1)+1。

Methods Using lower-upper solution method, principal eigenvalue theory, the maximum principle and the index of fixed point of compact map in cone.

上下解方法，特征值理论，极值原理，计算锥映像不动点指数。

By means of the comparison principle and the method of upper and lower solution,the corresponding sufficient conditions under which the models have a solution or no solution are obtained. If other parameters are given,the controllable parameters such as the population of release and the times of impulsive harvest are estimated respectively.

基于比较定理和上下解方法，分别获得了模型有解或无解的充分条件，估计了相关可控参数，即脉冲投放模型中的投放量以及脉冲收获模型中的脉冲收获次数。

The supply of this writer is controlled by program.It is safe and convenient. It can be used to check, write and read a EPROM, verify and save program to tape and load program from tape to EPROM. It also can be used to copy EPROM.

该写读器由程序上下电，使用安全、方便；可进行EPROM芯片擦除检查、写入、读出，将写入的程序和原程序校验；将程序记入磁带和从磁带上读入程序并写入到EPROM芯片中去，复制EPROM等许多强有力的功能。

If the atmosphere is squashed prolate into a double tide, and if we could then let it go, it would go sloshing up and down

如果大气被拉扁成双潮汐，那么让它这样下去，它就会继续上下涨落。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。