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Since every computation that can be done in logarithmic space can also be done in polynomial time it follows that if there is a logarithmic-space many-one reduction then there is also a polynomial - time many-one reduction.

若我们提供一个副函式可以在多项式时间解出&Y&，'''又'''可写出呼叫此副函式的程式并在多项式时间解出问题&X&，代表我们可以将&X&多项式时间图灵变换成&Y&。

It's a help to mappers, so they can get their maps tested, with some feedback , what they have done good and what could have been done better, etc before they submit their map to XJ .

它将会帮助地图制作者测试他们的地图，告诉他们什么部分做的好，什么部分需要改进等等，再让他们把地图提交给XJ。

After remarking that negroes and mulattoes enjoy an immunity from certain tropical diseases, he observes, firstly, that all animals tend to vary in some degree, and, secondly, that agriculturists improve their domesticated animals by selection; and then, he adds, but what is done in this latter case by art, seems to be done with equal efficacy, though more slowly, by nature, in the formation of varieties of mankind, fitted for the country which they inhabit.

当指出黑人和黑白混血种对某些热带疾病具有免疫力之后，他说，第一，一切动物在某种程度上都有变异的倾向；第二，农学家们利用选择来改进他们的家养动物：于是他接着说道，人工选择所曾完成的，自然也可以同样有效地做到，以形成人类的一些变种，适应于它们所居住的地方，只不过自然选择比人工选择来得徐缓而已。

If I fight the peaks and troughs, I'll get less done, but if I do certain kinds of work in each period of the day as they come, I'll get more done than most others in a similar line of work.

如果我违反了高效工作规律，我完成的事就少，但是如果我在这些高效工作时间的时候做一些事，我就会比其它人在同样时间完成的要多。

If I fight the peaks and troughs, I'll get less done, but if I do certain kinds of work in each period of the day as they come, I'll get more done than most others in a similar line of work.

如果我不在&高效&状态的时候去工作，我完成的工作会变少，不过如果我每天在&高效&状态的时候去工作，我会比那些拥有和我一样工作条件的人完成得更多。

I have done somethings in my life that i regret.But nothing compared to what you have done.

我后悔过自己做过的一些事情，不过都不能同你做的相提并论。

Psychological trait has important effects on military work. Lots of research has been done in the fields of the military while little has been done on the signalmen. The aim of this research is to discuss the relationship between mental and vocational adaptation of signalmen and to set up psychological selection standard.

心理素质对军事作业有重要的影响，军事领域对此进行了大量的研究，但有关通信兵的研究尚未见诸报道，本文主要研究军队通信职业特点与通信兵应具备心理素质之间的关系，建立通信兵心理选拔标准。

And so, when they had done those things which had to be done in the presence of the senate, they set out together for the praetorian camp, and in honour of their joint rule promised twenty thousand sesterces apiece to the common soldiers and to the others53 money in proportion.

而且，当这些事情在元老院通过之后，他们一起来到军营，宣布为了庆祝他们的联合统治，允诺给每个士兵两万塞斯特勒斯，其他人（53）也按比例给钱。

For the first time, a screw pile and pile driver system for preventing flood and rushing to deal with an emergency was manufactured. The screw piles of the system is different from screw drills used to sap, and it doesn't push soils out. Analyses, including the screw pile's structural strength analysis and the screw blade's welding analysis, were done by ANSYS, which showed that the screw pile's structural strength is enough and that the distort of the screw blade is small. Testing on the screw pile and pile driver system showed that the system performed stably and could meet the need of preventing flood and rushing to deal with an emergency. A mechanics model of interaction of a screw pile and soil was built, and expressions of torque of screw pile's cylindrical part on the condition of screw pile's crew part being driven into soil fully were gained, then the relation of the torque with screw pitch and out diameter of cylinder, which shows the torque decreases with the screw pitch increasing, and that the torque increases with the out diameter of cylinder increasing, which was according with the experiments of the screw pile's being driven into soils, and thus a screw pile with the best structure was chosen. Experiments of bionic surface showed that, on the condition of certain pressure on the surface, the protruding bionic surface can not reduce adhesion and resistance and that the corrugated bionic surface can reduce adhesion and resistance. An orthogonal experiment of the corrugated bionic surface was done with the factors including the width of protrusion, the space between two protrusions, the trolley's velocity and the vertical surface pressure and with the surface frictional coefficient as the experimental target, and some inclusions were drawn that the best combination of the factors was acquired and that the width of protrusion affected the surface frictional coefficient remarkably.

研制了防汛抢险螺旋桩机系统，提高了沉桩作业效率；利用ANSYS对桩体进行整体结构强度分析以及螺旋叶片的焊接分析，表明桩体结构强度足够，焊接过程中，螺旋叶片的变形小；对整个螺旋桩机系统进行试验，表明该系统性能可靠，工作稳定，作业效率高，能够满足防汛抢险沉桩作业基本需要；建立了螺旋桩桩土作用力学模型，得出螺旋桩沉桩过程中螺旋桩螺旋部分完全进入土体时螺旋桩圆柱部分所受扭矩以及扭矩与防汛抢险螺旋桩的螺旋导程和圆柱外径的关系曲线，表明螺旋桩螺旋部分完全进入土体时螺旋桩圆柱部分所受扭矩随着螺旋导程的增大而减小，随着圆柱外径的增大而增大，这与螺旋桩沉桩试验结论相符合，据此优选出最佳结构的螺旋桩；仿生曲面试验表明，尺寸较小的球冠突起型仿生曲面在一定压力作用下未能起到减粘降阻的作用，而尺寸较大的波纹型仿生曲面相对平板具有一定的减粘降阻作用；以波纹型仿生曲面突起宽度、波纹型仿生曲面两突起之间间距、台车的牵引速度以及叶片表面垂直载荷为因素，以曲面摩擦系数试验指标进行正交试验，寻求出在一定试验条件下最佳因素水平组合；波纹型仿生曲面突起宽度在本试验条件下对曲面摩擦系数影响显著，而其它几个因素对曲面摩擦系数影响均不显著；通过波纹型仿生曲面突起宽度和台车牵引速度的单因素试验，表明曲面摩擦系数随着仿生曲面突起宽度的增大而减小，而随着台车牵引速度的变化基本保持不变，和正交试验结果保持一致。

The finest form of Discovery is one attended by Peripeties, like that which goes with the Discovery in _Oedipus_. There are no doubt other forms of it; what we have said may happen in a way in reference to inanimate things, even things of a very casual kind; and it is also possible to discover whether some one has done or not done something.

发现的最好样式是伴随急转而出现的，比如在《俄狄浦斯》中；当然也有其他的样式；我们上面所说的也可能以一种与非常单调、甚至非常偶然的事物相关联的方式发生；还可能是发现某人做了还是没做某事。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。