自然科学

The truth not necessarily means trueness, pellucidity and inevitability, by which Gadamer guards the trueness of philosophy, and served for his practical philosophy research, simultaneously, he also realized the fundamental purpose of "making the hermeneutics as practical philosophy" through the understanding ontology, which had provided the theory basis for the unification of hermeneutics and the practical philosophy.

理解本体论的深层目标是要去阐明理解问题是包括自然科学在内的一切科学的根本问题，一切真理都是理解的真理，真理不一定就意味着确切性、明晰性和必然性。

A structure of automatic balancing head using PMDFM (Permanent Magnet Difference Frequency Motor) and an automatic balancing technique employing non-contact synchronously rotating electromagnetic force are put forward, and both are studied in respects of theoretical analysis, parameter calculation and experiment practice.

本文是在国家教委高校博士学科点基金和黑龙江省自然科学基金的资助下完成的，侧重于研究采用特种电机结构的自动平衡头的新的原理、结构及驱动控制方法。

Strepsiades begs Pheidippides to refrain from his expensive ways and begs him to enroll in the new-fangled school next door wherein he may learn about esoteric natural sciences as well as sophistry that might help him outwit their creditors in court.

Strepsiades回避Pheidippides不要他的昂贵的方法和求他报名参加新fangled学校隔壁其中他可以了解深奥的自然科学以及诡辩，这可能有助于他骗过他们债权人在法庭上。

Methodologically, we discuss the application of Reductionism and Phenomenology in both natural sciences and social sciences.

从方法论的角度，我们试图探讨还原论和现象学在自然科学和社会科学中的使用。

Natural science is gradually developed, and so does philately.

自然科学的研究和发展是不断向前推进的，邮学研究亦不例外。

We face a similar situation in U.S. education in math, physical science, and engineering.

在美国的数学、自然科学和工程教育中，我们面对着类似的情况。

I admit that the first sentence of this passage points to certain differences between social and physical science .

我承认这段话的第一句是针对社会科学和自然科学之间的某些区别而言。

This is the reason why Piaget's theory of cognitive development was so influential for education, especially mathematics and science education.

这就是认知发展皮亚杰理论对教育，尤其是数学和自然科学教育的影响，如此之大的原因。

Horizontal Well ; Piecewise Smooth Dynamical Systems ; Impulsive Differential Systems ; Optimal Control ; Stability ; Initial Time Difference

国家自然科学；水平井；分段光滑动力系统；脉冲微分系统；最优控制；稳定性；初始时刻偏差

Combining with the National Natural Science Foundation ofChina(No.50478032), following researches were done in this thesis: 1 The variation regularity of the ultimate anti-bending capacity of therectangular-sectioned beam with different corrosion has been obtained through thequalitative analysis of 48 beams (32 corroded beams and 12 comparing beams) withaccelerated corrosion; 2 The conclusion has been obtained that the strain of corroded steel bar andconcrete no longer fit in with the assumption of plane section through the analysis ofthe strain data, the strain relation of steel bar and concrete in the mid-span section ofvariously corroded beams at ultimate has been obtained. Through the building of newgeometric relation, the expression of the height of compressive area in the corrodedbeam with rectangular section has been deduced, and the formula with corrosion rateas the main variable for the anti-bending capacity of the corroded concrete beam hasbeen suggested and verified by experiment.; 3 The influence of steel bar corrosion and the concrete regression to the flexureductility coefficient of the corroded structure component has been analyzed. Based onthe relation of steel bar and concrete at yield and ultimate, the expression for theflexure at yield and ultimate of corroded reinforced concrete beam, and the model forthe calculation of the flexure ductility has been built.

本文结合国家自然科学基金项目(50478032)"既有钢筋混凝土桥梁时变可靠度研究"，主要进行了以下研究工作： 1通过对48根快速锈蚀钢筋混凝土矩形截面梁(32根锈蚀梁和12根对比试验梁)数据的定性分析，得到了不同锈蚀率下，锈蚀钢筋混凝土矩形截面梁极限抗弯承载力的变化规律； 2通过对应变数据的分析，论证了锈蚀构件钢筋和混凝土的应变不再符合平截面假定的结论，并通过回归分析得出了不同锈蚀率的螺纹钢筋梁和光圆钢筋梁在极限弯矩作用下，跨中截面处钢筋应变和钢筋处混凝土应变的关系，通过构造新的几何关系，得出了锈蚀钢筋混凝土矩形截面梁计算受压区高度的表达式，既而得出了以锈蚀率为主要变量的锈蚀钢筋混凝土矩形截面梁的正截面抗弯计算建议公式，并通过试验数据加以验证； 3分析了钢筋锈蚀和混凝土劣化对锈蚀构件曲率延性系数的影响，结合钢筋屈服和极限弯矩两种状态下钢筋和混凝土的应变关系，分别得到了锈蚀钢筋混凝土矩形截面梁屈服曲率和极限曲率的计算表达式；既而推导出曲率延性系数的计算模型。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。