查询词典 friction

The self-lubricanting coating of nickel-coated graphite was prepared by oxygen-acetylene flame spraying technology and its friction and wear properties at room temperature were studied in a ball on disk test rig.

选用镍包石墨粉末，采用氧-乙炔火焰喷涂技术制备镍包石墨自润滑涂层，在球-盘摩擦磨损试验机上探讨了室温条件下镍包石墨自润滑涂层的摩擦磨损性能。

Bosch has upgraded the Pack 201 FV with a carrier chain which ensures gentle product feeding and minimizes additional heat through friction during product transport.

博世已升级与运营商链，确保产品喂养温和通过摩擦，减少在产品运输的额外热量包201抗体。

In this paper, with an original designed tool and selected welding parameters, 2024-T4 aluminum alloy sheets were friction stir welded successfully. A series of weld experiments were performed; the microstructure and the mechanical properties of the joints were analyzed. The influences of the welding parameters upon the quality of the joints were studied. The optimized welding parameters window was obtained in which high quality joints can be made and the tensile strength of the optimized joints were more than 80% of that of parent metal. The residual stresses of FSW joints have been investigated by using the Hole-drilling method.

本文自主设计搅拌头，通过选择合适的工艺参数，成功实现了硬铝合金2024-T4板材搅拌摩擦焊接；通过对接头成形和微观组织的研究得到可以实现焊接的工艺参数范围和工艺参数对接头成形的影响规律，并结合接头力学性能研究形成了接头性能与工艺参数之间的关系，并据此建立了优化工艺参数窗口，优化工艺参数下接头的抗拉强度可达到母材的80%以上。

The effect of fiber friction within rovings and yarns can be expressed by means of "minimum twist of cohesion".

粗纱和细纱中纤维摩擦的效用，可以用&最低粘合捻度&表示。

1 In Zhanjiang Power Plant has been analysed,and it is believed that the main causes to be as follows:(1)large deformation of the lowpressure cylinder leading to collision and friction between moving and stationary parts;(2)the vacant space under bearing pedestal and turninggear box bringing on lower rigidity;(3) the natural frequency of bearing pedestal is closing to the power frequency etc.

对湛江发电厂1号机4号轴瓦振动大的问题进行分析，认为其主要原因为：低压缸变形大导致动静碰摩，轴承座及盘车箱下部脱空引起刚度降低，轴承座的固有频率与工频相近等。

In order to reduce the skin friction efficiently,more research works should be done on the characteristics of turbulent boundary layer,turbulent coherent structures and the mechanism of turbulent drag reduction for flow over riblets surfaces.

为更有效地减少表面摩阻，必须深入开展对沟槽面湍流边界层特性、湍流拟序结构及湍流减阻机理等方面的研究。

MoS2 of different percentage composition was added to PI films for reduced the friction coefficient.

为降低PI膜的摩擦系数，在PI中加入不同质量比例的MoS2易作为减摩相制备复合润滑膜。

Physical-chemistry properties and percentage composition of mold fluxes have influence on friction force between mold and strand.

本文以重钢170×1200mm铸机为研究对象，计算了浇铸16Mn钢种时，在不同的保护渣物理化学性能条件下铸坯与结晶器间的摩擦力。

It was observed that the background of internal friction for some weak adhesives, e. g., phenyl salicylate, water glass mixture, etc. seems to be neither negligible nor constant value which is dependent on such factors as their temperature, thermal stress, time, dryness and strain amplitude, similar to that of dislocation damping.

对于水杨酸苯酯，水玻璃混合剂之类弱粘结剂所造成的背景内耗既不能忽略也不是常数，它与粘结层温度、热应力、时间、干燥程度和应变振幅等因素有关。

There are other skin reactions such as eczema, psoriasis, or just plain friction which results in rashes.

还有其他的皮肤反应，如湿疹，牛皮癣，或只是简单的摩擦导致皮疹。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"