微小地

For the sake of accurately estimating the contact force, we describe a new method, in which the contact force is considered as a jump function of time, and by use of response to jump function, the history of impact force is detected in the duration of rotor contacting with stator.

为更准确地获得接触作用力，本文将接触过程中转子所受作用反力函数视为在微小时间间隔下的阶跃函数，提出一种计算接触作用力的新模型，利用系统对阶跃函数的响应可以得到转子与定子碰摩时的切向摩擦力与法相作用力的时间历程及相应的位移、速度量。

At the same time, considering the jumpiness or incline caused inaccuracy and pretermission when the capsule moving ahead, two couples of infrared ray and electron transducer were designed to detect the light signal of the corresponding parts of the capsule. After the addition operation compensation and differential coefficient, turning the little different simulation signals of the body and cap of the capsule into digital signals for detection. It is more accurate for detection and stable to the disturbance. Step electromotor was used for the capsules direction turning which solved this problem efficiently. The capsules were ranged in order according to their colors with the cap at the same direction.

同时考虑到胶囊行进过程中跳动、倾斜及随机干扰造成的误判、漏判，设计了两对红外光电传感器用以同时检测胶囊上下两个边缘部位的光信号，两个检测信号经加法运算补偿、微分运算处理，将体现胶囊的帽、体微小几何尺寸差别特征的弱模拟信号直接转变成数字量检测，提高了检测的准确率及抗干扰能力，并由步进电机控制胶囊掉头，有效地解决了胶囊体、帽的位置调整，分色调头排列，达到帽、体一致。

For instance, adjust the two clocks straight on top of each other, or offset slightly, trying to stimulate various modes of ground bounce, board crosstalk, or metastability that you believe might influence your system.

尝试模仿被认为影响系统的各种地波动、板干扰或亚稳度模型，调解两个时钟直到彼此覆盖或发生微小偏置。

An. minimus A and C can be visually distinguished according to the specific bands in agarose gel.

两种分子鉴别方法都能在普通琼脂糖胶上根据特异扩增带直观地将微小按蚊A和C区分开来。

Two sibling species, Anopheles minimus A and C,found in southern China,can be distinguished by the PCR-ASA method established in this study.

结论我们建立的ASA分子鉴别方法能有效地将我国微小按蚊不同亲缘种A和C区分开来。

Minimus A and C is confined under species level; two PCR-based approaches can effectively differentiate these two sibling species which are similar in morphology and different in ecology.

建立的两种以PCR为基础的分子方法均能有效地鉴别形态上难以区分的微小按蚊复合体亲缘种A和C。

Minimus A and C cluster together in the same branch but they are separated in sub-branchs, implying their monophyletic evolution.

两种分子鉴别方法都能在普通琼脂糖胶上根据特异扩增带直观地将微小按蚊A和C区分开来。

Therefore,a series studies of ice-pier vibration are performed from different aspects in this paper.The main work of this his thesis is summarized as follows:(1) Ice response spectra is proposed based on the idea of a seismic response spectra analysis of str .. uctures.Firstly,ice response spectra on the basis of power spectra density function is established;Secondly,based on the assumption of quadratic parabolic interpolation method,the nonlinear interpolation analysis method of ice response spectra is studied from both theoretical and practical points of view,and the successive computation formulas including ice displacement,velocity and acceleration response spectrum are deduced by Duhamel integral.Furthermore,to analyze the effectivity and applicability of the method, the real temporal curves of ice pressure are used to be studied.The results show that the presented method is more convenient and accurate to study the structural response induced by ice force,also it can be effectively applied in the design of ice resistance.

鉴于此，本文针对冰激桥墩结构振动问题从不同方面展开了一系列与之相关的研究，主要研究内容如下：(1)根据结构抗震反应分析思想提出了冰振反应谱，首先建立了基于功率谱密度函数的冰振反应谱；其次借鉴地震反应谱内插法的思想从理论和实际观点出发，假定在等距离微小时间间隔内冰荷载按二次抛物线规律变化，由Duhamel积分推导出冰振位移、速度以及加速度反应谱的一系列连锁公式，建立了基于非线性内插法的冰振反应谱，并利用实际冰压力时程曲线进行了冰振反应谱数值分析，为以后冰激结构振动的研究提供一种方便、简捷、精确的分析方法，也能够将其有效地应用到结构的抗冰计算中。

Objective To investigate microclimate in sanitarium area on Gulang Island and its variation law,and to instruct convalescence work better.

目的 为了摸清鼓浪屿疗养区微小气候情况，掌握其变化规律，更好地指导疗养工作而开展本研究。

But they remained skeptical of his selectionist reasoning -- that tiny random improvements were all there was to it -- because they felt Darwin 's explanation did not accurately fit the facts of nature, facts with which they were intimately familiar in a way that is rare today in this era of specialization and indoor laboratories.

但是，对于他用自然选择说来解释演化的机理――一切都只源于随机取得而累积的微小进步――仍很怀疑，因为他们觉得达尔文的说法不能准确地对应自然现实，那种现实他们再熟悉不过了，是那个年代的博物学家用专业分类和书斋研究的方法所观察到的（虽然我们现代已很少采用那些方法）[8]。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐