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A fixed annuity ensures a certain payment amount whereas a variable annuity does not provide for a certain payment amount.

固定年金有一定保证赔付而可变年金并未规定缴纳一定数额。

Resembling a string of beads, as the roots of certain plants or the antennae of certain insects.

念珠状的形状如一串珠子的，如某些植物的根或某些昆虫的触角

According to the change of the enemy\'s quantity and the qualitative theory of the differential equation, we research the spruce aphides and its predator system. At the same time, we discussion the spruce aphid multiplication model when the natural enemy quantity is a certain value and the periodic oscillating model whose the quantity of the natural enemy changes along with the time. Obtains the stability condition of the balance point and the limit-cycle existing condition, the system presents the dissipative structure\'s character. Finally it explains that this theoretical analysis has certain practical significance regarding the preventing and controlling harmful insect.

第五章，松毛虫与其天敌的关系是食饵和捕食者的关系，根据天敌数量的变化，利用微分方程定性理论，研究松毛虫与天敌系统，讨论天敌数量为一定时的松毛虫增殖模型和天敌数量随时间变化的周期振荡模型，得到正平衡点全局稳定性和极限环的存在条件，通过计算机模拟，说明周期振荡的捕食模型能够呈现典型的时间耗散结构特征，对于防治害虫有一定的实际意义。

To participate in certain activities and to obtain certain services offered on this web site and by Aras, you may be asked to provide varying amounts of personal information.

为了参与本网站和 Aras提供的活动及服务，您可能被要求提供数额不等的个人资讯。

The dissertation analyzes the development of the People's assessor system and certain problems in practice, and brings forward certain suggestions regarding the construction of the system based on the value analysis.

本文分析了我国陪审制度的发展和实践中存在的问题，在价值分析的基础上，针对实践中存在的问题，以务实的态度对我国人民陪审制度的具体构建提出了自己的思路。

Precursor LiMgxMn2-xO4 is prepared by the method of phase transfer, and then the precursor is sintered in the air astrosphere at a certain temperature for a certain time to get cathode material for lithium ion battery.

利用相转移法合成了LiMgxMn2-xO4前驱体，在电炉中于一定温度下烧结一定时间，得到锂离子电池正极材料粉体，并利用XRD、SEM、IR等对材料粉体进行结构形态表征。

The fact that only certain colors appear in an element's atomic emission spectrum indicates that only certain frequencies of light are emitted.

事实上，只有特定的颜色在一个元素的原子发射出现光谱表明，只有根据某些频率的发射。

As, however, it has been maintained by certain leading statesmen in Athens that the recognised standard of right and wrong is as high at Athens as elsewhere, but that, owing to the pressure of poverty on the masses, a certain measure of injustice in their dealing with the allied states[2] could not be avoided; I set myself to discover whether by any manner of means it were possible for the citizens of Athens to be supported solely from the soil of Attica itself, which was obviously the most equitable solution.

但是，由于一直都维持在雅典某些领导的政治家认为是非是在雅典奥运会上与其他地方一样高认可的标准，但是，由于贫困群众，有一定程度的不公正的压力处理与盟国[2]是无法避免的，我自己设定是否以任何方式发现手段的还有雅典市民可能得到支持，从阿提卡本身，这显然是最公平的解决方案完全土壤。

The paper is based on the practical application of certain armed helicopter's barbette tracking system, which has discussed the model of AC servo system, the testing and modeling of certain micro-machined velocity gyro. The article also studied the tracking quality in which the system has used the motor encoder and the velocity gyro as the velocity loop feedback respectively.

以某武装直升机炮塔随动系统实际应用为背景，讨论了交流伺服系统的数学模型、微机械速率陀螺的测试与建模；研究了分别以电机编码器和速率陀螺输出信号作为速度环反馈时，系统输出的跟踪特性。

The positive law of society, which is with us the municipal law of England, directs it to vest in such person as the last proprietor shall by will, attended with certain requisites, appoint; and, in defect of such appointment, to go to some particular person, who, from the result of certain local constitutions, appears to be the heir at law.

社会的肯定性法律，与我们相伴的英格兰的自治法律，指示应当授予最近所有者的意志所确定的人，加之以确定的必要条件，进行指定；在这样的指定所产生的缺陷中，根据确定的自治原则所确定的某些个人，将成为法律上的继承人。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？