材料

The study will develop the important research domain in the high efficiency grinding which has great potentialities, considering that the increase of heat transfer efficiency means an synchronous increase of the limit material removal rate under the condition of grinding unburn, therefore the further perfection of this study will not only increase the available material removal rate to a new level, but also solve the workpiece burn problem of the difficult-to-machining materials in the high efficiency grinding, which has great technical and economical significance

本项研究可望开拓高效磨削的极富潜力的重要研究方向，考虑到换热效率的提高本身也就意味着磨削时不发生烧伤的材料极限去除率的同步提高，因而进一步完善此项研究不仅可望将现有高效深切磨削的材料去除率提高到一个新水平，而且将有效解决难加工材料的高效磨削问题，其技术经济意义十分重大。

Drama in Han Dynasty is of the unfavored kind. I assume that there are three reasons: one is lacking in material; second, these limited materials are dispersed in various ancient documents, Third, dramas in Han Dynasty was no more than some elements of entertainment, it requires our conjectures and imaginations that will make the analysis complicated.

此中原因大概有三：一是材料少；二是材料分散，有限的材料分散在各种古籍中，没有专门的资料；三是这时的戏剧在现有的资料看来多数情况下只是众多娱乐形式中的一些因素，分析起来有难度，而且需要一些推测与想象。

In three years, the microscopic structure and corrosion resistance of both unirradiated and irradiated aluminum alloy 6061T6 serving in selected research reactor environments will be studied in this project.

9；本计画将以三个年度的时间，针对铝合金材料（包括未照射材料与辐照材料）於研究用反应器水化学环境下长时间服役后的微结构与腐蚀性质变化进行系统性的分析。

But recall: We have been assuming unproblematic access to patterns among past, present, and future sense-data and among sense-data that are possible as well as actual. And the same considerations apply here.

但是记住：我们假设了对模式（——过去、现在、未来的感觉材料，可能的感觉材料如同实际的感觉材料一样）的可达是不成问题的。

Authentic material is always used in this book. The readings are unsimplified chapters from textbooks and other sources with which university students must become familiar.

本书采用的材料真实可靠，阅读材料来自于未经简化的原版大学课本或是大学生们所必须熟知的材料。

The amount of web material added to, subtracted from and present in the tension zone in a sample time period is then converted to an unstrained amount of web material that when combined provides an estimate for the present amount of unstrained web material present in the tension zone.

然后，将采样时间周期内添加到张力区的、从张力区中减去的以及存在于张力区中的卷筒纸材料的量转换为卷筒纸材料的非应变量，当将他们相结合时，给出存在于张力区内的非应变卷筒纸材料的当前量的估算。

The electronic structures and the non-linear optical properties of bis schiff base and their derivatives have been studied using FF/HF method.The effects of electron donor/acceptor on nonlinear optical property were examined at the molecular level.As a result,the NLO coefficients of the substituted compounds are all larger than the unsubstituted compound.Among them, the β value of compound 4 is the largest one.

自1961年激光发现以来，非线性光学和非线性光学材料迅速发展起来[1～4]，随着光通讯、光电子学和光信息处理等在实际中的应用，对非线性光学材料的理论与实验研究进一步展开，寻找和设计具有较大非线性光学系数，超快光学响应，较低的光学损伤阈值，良好的化学稳定性和热稳定性的非线性光学材料成为这一领域的主题[5～12]。

For developing a method to reduce the emanation coefficient of Rn in materials, emanation coefficient of Rn in geological uranous materials such as zircon, uranium-bearing ore, etc is measured. Heating is used to study the effect of heating temperature on emanation coefficient of Rn.

通过了解锆英砂、铀矿粉、石英砂铀矿粉混合物等含铀地质材料中222 Rn的析出情况，探索了降低这些材料中氡射气析出率的方法，并应用灼烧法研究了灼烧温度对上述材料中氡射气析出率的影响。

The possibility of additional waterish stuff that is nonphysical is not, perhaps, to be taken too seriously, but it is not so implausible to imagine the discovery that even though water was believed to be the unique waterish stuff, in fact there turn out to be two or more different kinds of waterish stuff.

&另外的水性材料是非物理学的&这个可能性或许太过严格，但是下面这种情况就不会太不合理了：可以这样设想，即使水被认为是唯一的水性材料，但事实上发现有两类或更多类的水性材料。

Mesoporous zincum sulfide materials have the unique character of photoelectricity, with nicer applying foreground in photocatalysis、photoconducting device、photochromic materials、electrechromic materials and so on .

硫化锌介孔材料具有独特的光电性质，在光催化、光电器件、光致变色材料、电致变色材料等方面展示良好的应用前景。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！