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Based on the similarity theory,two degrees of freedom flight test platform was designed to simulate the helicopter,then the platform was taken as the research object,and the Lagrange-Euler equation and the equivalent moment method were used to derive the system dynamics model,and the physical parameter was estimated.

基于相似性理论设计了具有两自由度的直升机飞行模拟试验平台，以该试验平台为研究对象，利用拉格朗日-欧拉方程与等效力矩相结合的方法推导出系统的动力学模型，预估了试验平台的物理参数；通过试验获得在固定总距角情况下直升机的升力随转速的变化关系。

In this paper we prove Dirac conjecture for some special graphs in Which the numbers of ve-rtices are not more than 11, or have K or more vertices of degrees at least v-K-3 with v ≥9+K(K=1,2,3,), hence a proposition equivalent is given for it.

本文对顶点数不超过11或当v≥9+K(K=1，2，3)且G中至少含有K个次不小于v-K-3的顶点的特殊图证明了Dirac猜想，从而给出一个与Dirac猜想成立等价的命题。

Of course, the mathematical proof of ergodicity, even in a hard ball system with only few degrees of freedom, is still a difficult task.

当然，即使对具有很少自由度的硬球系统，遍历性的数学证明也仍然是一件非常困难的工作。

It is shown that ergodicity validates the statistical laws in a dynamical system, and a large number of degrees of freedom is not necessarily the essential condition that leads to statistics.

研究表明，遍历性保证了统计定律在动力学系统中的运用，大自由度数目并不一定是导致运用统计的本质条件。

There are also signs that the value of English degrees is being eroded on the international market.

也有迹象表明：在国际市场上，英国的学位也贬值了。

No degrees of freedom left to estimate the error variance when the data of this design are analyzed, so the standard ANOVA can t be used.

然而在分析这类数据时因为无多余的自由度可用于估计误差方差，因而不能采用标准的方差分析法。

The risk of an eruption was brought up from three to four degrees.

喷发危险的长大，从三到四度。

This essay tries to explain this question to some degrees by the case of Heyang project of Shanxi Research Association for Women and Family.

本文以陕西妇女婚姻家庭研究会所开展的合阳县妇女参政项目为个案，对这一问题进行了一定解释。

Yesterday, this from CCTV " estrade of a hunderd schools " go " the most additional kind " scholar, first degrees make public the doubt that responded to a netizen, say frankly although oneself look careless not worry at all, it is to hit however fear in heart " network mob ", hope netizen can be some more to oneself good-tempered.

昨日，这位从央视《百家讲坛》走出来的"最另类"的学者，首度公开回应了网友的质疑，并坦言自己虽然看上去大大咧咧满不在乎，却是打心眼里害怕"网络暴民"，希望网友能对自己多一些宽容。

Did you know that ethyl alcohol|boils at 78.5 degrees Celsius?

你知道威士忌78，5摄氏度就会沸腾吗？

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。