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As these robotic lawn mowers work they determine the size of the yard and how fast the grass is growing, when they go back to their charging base they calculate the next time they need to come out to keep the grass at the optimal height.

由于这些机器人草坪割草机工作，他们确定大小的码，以及如何快速基层是成长，当他们回到自己的基地，他们的收费计算，下一次他们需要走出来，让基层在最佳的高度。

Yields from chiral bisoxazolines (5a) with diethyl oxalate using NaOCH〓 as base for the first time. The structures of chiral multioxazolines and their intermediates, multi (β-hydroxylamide) s, were characterized by 〓H NMR, IR, mass spectra and elemental analysis. The catalytic activities and enantioselectivities of chiral multi (β-hydroxylamide) s (4) and chiral multioxazolines (5～8) were investigated by using acetophenone and β-acetonaphthone as former chiral ketone, KBH〓 or NaBH〓 as reductive reagent in chapter three.

在此基础上，对合成方法作了创新，以羧酸或酯为原料，在无催化剂的条件下与手性α-氨基醇反应，通过回流分水或脱醇的方法，一步反应合成了手性多噁唑啉（5～8），产率为89.2%～98.4%；以手性双噁唑啉（5a）为原料，在NaOCH〓的作用下，与草酸二乙酯反应，首次合成了呋喃类双嗯唑啉（6a），产率为72.9%～75.6%。

The paper through the mechanism which produces to the asphalt road surface water harm carries on the induction to summarize, as well as the different type bituminous mixture water stability has carried on a series of contrasts experiment to several kind of different aggregates and the asphalt adherency, has analyzed the aggregate and the asphalt adherency and the bituminous mixture water stability; Meanwhile moves the water action mechanism take the pavement structure in as the key point, in the basis room experiments to the design half rigid base bituminous mixture test sample carries on washes out the experiment, the observation test sample and washes out when the number of times increase along with the time variation the basic unit wash load situation, has analyzed the water to the bituminous pavement various structures level damage rule; To immerses under the condition using the ANASYS finite element software the bituminous pavement structure level the stress to carry on the analysis computation, and analyzed the bituminous pavement according to the computed result to produce the unboiled water harm the rule, further to understand the structure level produced the unboiled water harm the rule.

本论文通过对沥青路面水损害产生的机理进行归纳总结，对几种不同集料和沥青的粘附性以及采用不同抗剥落措施的沥青混合料的水稳性进行了一系列对比试验，分析了集料与沥青的粘附性及沥青混合料的水稳定性，并对水稳性试验进行了评价；同时以路面结构中的动水作用机理为重点，依据室内试验对设计的半刚性基层沥青混合料组合试件进行冲刷试验，观察试件随时间变化和冲刷次数增加时基层的冲刷量情况，分析了水对沥青路面结构层的损坏规律；利用ANSYS有限元软件对浸水前后沥青路面层底应力进行分析计算，并根据计算结果分析了沥青路面产生水损害的规律，进一步了解结构层产生水损害的规律。

I born from a family with very cultural atmosphere,parents work outside,I grow up with grandpa and grandma,they teach me goodness and tolerance,parents educate me to behave with honesty,act with sureness,and take things rationally as they come, when is time to marriage,god give me the fine husband and his families are goodness also.We never quarrel because the housework.Only for different opinion about someting,we would altercate to sympathize. The son birth make me feel the god bounty. The smart and sensible son is my pride. I educate him that excellence should turn into habit,excellent man represent in all aspects. I don't want that he be very success, just want he is a ordinary people,healthy and happy,and find his land to base on.

我出生在一个文化氛围很浓的家庭，父母在外工作，跟着爷爷奶奶长大，爷爷奶奶教会我善良和宽容，父母教育我为人要正直，做事要踏实，遇到事要理智地去处理；到了谈婚论嫁的年龄，上苍把优秀的老公赐给了我，老公的家人也是很善良的一家人，我们俩从没有为家务事而吵架，只是因为对某件事看法不同，在拌嘴磕牙中得到共鸣；儿子的出生让我更加感谢上苍的厚待，聪明懂事而又帅气的儿子，成了我的骄傲，我教育儿子优秀要成为习惯，优秀的人表现在方方面面，我不求儿子将来有多大成就，只要求他做一个健康快乐的正常人，将来能找到自己的立足之地。

Similarly, if the strong shear, which could suppress all the scattering in the quiescent two phase region, stopped, the follow-up phase separation also displayed characteristics of anisotropism and relaxation, In this dissertation, the transposed"butterfly'and"streakpattern were observed for the first time within the shear-history-influenced phase separation, which is found closely relevant to the anisotropical relaxation behavior of macromolecules. 5. The phase separation kinetics of PS/PVME under oscillatory shear was further studied on the base of that done under simple shear. It is found that, under specific temperature and strain amplitude, the occurrence of phase separation is strongly contingent on oscillatory frequency and only intermediate frequency could effectively induce phase separation; If all considered oscillatory shear could stimulate phase separation, a fixed frequency can maintain specific most probable phase size and higher frequency yields smaller phase, which makes a higher elasticity but weaker stress relaxation; Furthermore, higher frequency can produces stronger compulsory oscillation on the MPPS but won't change the mean of the MPPS. Under given frequency and strain amplitude, the phase separation kinetics dramatically depends on the phase angle of oscillation and the phase separation corresponding to different phase angle follows different dynamical process.

在简单剪切场下相分离动力学研究的基础上进一步对振动剪切场下PS／PVME的相分离动力力学进行了尝试性的研究，发现：在一定温度和振幅条件下，相分离的发生强烈的依赖于振动频率，只有中等频率的振动剪切才能有效地促进相分离的发生；在都能使相分离发生的前提下，一定频率的剪切能够使体系维持一定的最可几相尺寸，较高频率的剪切导致体系形成的相区尺寸较小，因而体系的弹性效应较强而应力松弛效应较弱；同时，更高频率的剪切对最可几相尺寸的强迫振动效应越强，但不会使最可几相尺寸的平均值发生改变；在一定的振幅和频率条件下，相分离的动力学过程会强烈地依赖于相位角，不同相位角对应的相分离遵循不同的动力学过程但机理一样。

Considering the technology difficulty in satisfying direction finding accuracy and resolving angle ambiguity,the same time in defined space for ultra-band antiradiation missile seeker,theories of direction finding by phase interferometer and resolving angle ambiguity by double base line are simply introduced.

针对反辐射导弹导引头超宽带测向系统中，在较小的体积内难以同时保证测向精度和解模糊的技术难题，介绍了相位干涉仪测向原理和参差双基线解模糊方法及其原理，并结合反辐射导弹导引头的具体应用情况，提出了一种基于虚拟基线解模糊方法。

We grow at the same time, and continuously injected into scientific and technological strength, development, development of different working conditions under the baghouse accessories, to meet customer requirements; more convenient for customers to cooperate with the mainland, the company built in Hefei, Anhui Province occupies an area of more than 10,000 square meters production base, to narrow the gap with the distance from the surrounding customers.

我们在发展壮大的同时，不断注入科技力量，开发、研制适合不同工况条件下的袋式除尘器配件，满足客户的要求；为了更方便的同内地客户合作，公司在安徽省合肥市建设了占地一万多平方米的生产基地，拉近了同周边客户的距离。

Also the nature as a result of bushfighting, golden hill did not establish firm base area all the time.

也正是由于游击战的本性，金山一直都没有建立起稳固的根据地。

The metallogenic series in time can be divided into three metallogenic pe riods (cassiterite silicate period, cassiterite sulfide period and base metal sulfidr period ) and six metallogenic stages.

该成矿系列时间递变可分为三个成矿期(锡石硅酸盐成矿期、锡石硫化物成矿期和贱金属硫化物成矿期)和六个成矿阶段。

An efficient central ellipse algorithm for estimating the echo peak positions of ultrasonic sampling was presented to find the accurate receive time of echo by searching the peak of energy bursts, which is base on the theories of energy centrobaric correction method and least square method in the ultrasonic ranging system.

基于能量重心校正法和最小二乘法的原理，提出了一种改进型椭圆中心超声回波寻峰算法：通过曲线拟合搜索椭圆中心点，即回波信号能量集中点，进而找到回波信号的峰值点。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失