自转

Properties of the traction contacts are considered in detail,with particular attention to elastohydrodynamic lubrication and asperity contact.

TR的设计者们，目前模拟牵引力作为一个多维面，它们是自转、滚动、速度、压力、温度和滑动的函数。

The Earth's rotation and revolution Movement was originally astrometry and ground studies of common research topics, but the methods and goals of different.

地球的自转运动和公转运动本来就是天体测量学和地学共同的研究课题，但方法和目的有所不同。

The autorotation characteristics of helicopter are directly related to its safety and reliability.

直升机自转特性的好坏，直接关系到该型机安全性和可靠性。

The landing of a helicopter in autorotation is formulated as a nonlinear optimal control problem.

本文将直升机的自转着陆过程定义为一个非线性的最优控制问题。

Arguably the world's first successful helicopter, this historic machine was badly damaged in June 1939 during autorotation tests.

可以说是世界上第一个成功的直升机，这一历史性的机件严重损坏1939年6月期间自转测试。

Gliding descent in autorotation is a maneuver used by helicopter pilots in case of engine failure.

当直升机的发动机失效后，自转下滑就成为驾驶员实现安全着陆的唯一有效手段，这需要熟练的驾驶技术。

The simulation results show that the improved control law can satisfy the requirement of the helicopter, thus attaining an effective way for the control of the engine during the helicopter autorotation.

仿真结果表明，改进后的控制规律能够基本满足直升机对发动机状态控制的要求，为解决直升机发动机在自转训练情况下的控制问题提供了一条有效的技术途径。

Without them, the Hornet's autorotation proved unacceptable to the CAA, which otherwise found the diminutive craft satisfactory.

如果没有他们，大黄蜂的自转证明民航局不能接受的，否则发现，身材矮小的工艺令人满意。

Rotor autorotation landing is the inherent capability of helicopter in especial situation.

旋翼自转是直升机一种特殊的飞行情况，在此情况下，旋翼失去发动机动力，只能利用其原有的旋转动能和直升机的势能保持稳定旋转。

Nonetheless, however slowly it turned during autorotation, the rotor - with the weight of ramjets at its tips - had plenty of accumulated kinetic energy left to trade for lift when the time came.

尽管如此，但它在自转慢慢转过身来，用的冲压发动机转子重量在其秘诀--大量的积累动能离开时，为电梯行业的时间来了。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。