冲击表面

In this paper,the stability of arch slab under the action of the plunging jet is investigated.The pressures on upper and lower surfaces of the slab and push force of arch abutment are measured.A generalized formula for uplift force is proposed.

通过实验分析，研究了冲击射流下拱形底板失稳型式，量测了底板上、下表面压强分布，概化了时均上举力的计算公式，实测了动水荷载作用下拱端推力。

Thermal Barrier Coatings is a kind of ceramic layer of excellent high temperature oxidation resistance as well as very low thermal conductivity, which is deposited onto the surface of substrate by the assistant of bond coat layer. TBCs can effectively reduce the service temperature of the protected substrate, alleviate the thermal shock loading, reduce the requirement for cooling air, and so, the thermal efficiency of apparatus is improved. Therefore, TBCs have been widely used in the fields of space flight, chemical industry, and metallurgy or energy sources industry.

热障涂层(Thermal Barrier Coatings，简称TBCs)是一种陶瓷涂层，具有优良的抗高温氧化和非常低的热传导系数，它通过粘结层沉积在耐高温金属或超合金的表面，可以有效降低被保护基材的服役温度，减轻其热冲击载荷，降低对冷却空气的需求，提高器件的热效率，从而被广泛应用于航空航天、化工、冶金和能源等领域。

The link plates manufactured by using high-precision friction press ensures long wear life and high fatigue strength of chain joint links, and special medium-frequency heater ensures the highest hardness, thickest hardfacing layer and longest wear life of chain pin surface and avoids sudden breaking of chain pins due to the impact force.

专用的铰孔技术确保了链条链板的节距与孔径的统一性；精密摩擦压力机锻制的链板确保了链条链板的高耐磨寿命与高抗疲劳，专用的中频加热设备确保了链条销轴表面的最高硬度与最替代日本链条的高速板链链条深的硬度层、最长的耐磨寿命，避免了链条的削轴的冲击突然断裂。

The influence of strength level and surface strengthening of 5CrNiMo steel on the impact fatigue property in the range of hardness required by hot drop-forging die steel is investigated.

研究了5CrNiMo钢在热锻模要求的硬度范围内，材料强度水平和表面强化对冲击疲劳性能的影响。

Carburized materials possess relatively high surface hardness, good fatigue strength and enough toughness.

材料经渗碳处理后可获得较高的表面硬度、接触疲劳强度而心部仍保持良好的冲击韧性。

The study and comprehensive analysis of static high-pressure quenching experiments and laboratory dynamic high-pressure experiments on chondrites,as well as the study of shock-induced phase transition of minerals in the Suizhou meteorite revealed that the P-T conditions for phase transition of minerals during natural impact events,such as collision of cosmic bodies or impact of meteorites on the Earth′s surface,are not consistent with those obtained by shock experiments on chondrites or rocks in laboratory,...

通过对球粒陨石的静态高压淬火实验和人工动态高压实验的研究和综合分析，以及对在太空中经受过撞击的随州陨石中矿物发生高压相变的研究，查明了自然界的冲击事件，如星体的相互碰撞和陨石对地球表面的撞击中，矿物发生相变的P-T条件与人工冲击波实验的结果并不一致，而与静态高压淬火实验的结果相似，即前者类似静态高压淬火实验，保压时间较长，能产生高压矿物，后者保压时间极短，无高压矿物形成。

The Corrosive wear properties of Ni60 +20%WC alloy coatings by laser cladded process have been measured and wear-corrosion surface morphologies in diffirent impact velocities and sulphuric-acid concentrations have been studied by SEM.

测定了Ni60＋20％WC合金激光熔敷层的腐蚀磨损性能，用扫描电镜研究了冲击速度和介质浓度对腐蚀磨损表面形貌的影响。

This is because the fertilizer enhances plant and root growth and increases the crop canopy, which in turn will lessen the impact of rain drops on the soil.

这是因为肥料促进地上和地下部根系的生长，增大作物的植冠，从而减缓雨滴对土壤表面的冲击。

The heel crash pad absorbs shock on hard surfaces, and the Trail Shield layer protects your foot from uneven trail debris.

足跟垫吸收碰撞冲击硬表面，和开拓者屏蔽层保护您的徒步不平衡线索碎片。

The "look" is purpose-driven by Arai's belief that you can make changes to a helmet shell as long as you never forget its primary function of impact management, thereby "requiring" the use of smooth surfaces without exaggerated ridges or protrusions that may look impressive, but that in a crash possibly have an adverse effect on the helmets main job – manage impact energy.

在&看&为宗旨，由井的信念，你可以只要你永远不会忘记它的影响管理的主要功能，从而&规定&的顺利没有夸大山脊或突起的表面，可能会使用更改为一个头盔壳体驱动印象深刻，而且在一场事故可能会对头盔的主要工作产生不利影响-管理冲击能量。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。