锤击

And some test indices obtained from different geological units in Beijing area are selected and studied contrastively.

研究目的：确保高质量地搜集北京地区锤击取芯钻进和回转钻进工法土样的试验成果数据，分析不同工法试验指标的关系，针对北京段的地层条件，给选择可靠的备选钻探方法提供技术依据。

According to the anomalous effects of the test such as component deformation as a result of the repeated transverse impact,a fault elimination test method of equivalent simulation for cycling hammering is established,which adopts the theory of "equivalent actual response,and inequivalent actual stimulus".

在新型火炮增程弹药适配试验中出现引信异常失效，针对回收零件呈现受过多次横向冲击的变形等异常效果，建立了一种&等效实际响应，不等效实际激励&的等效模拟循环锤击故障排查试验方法。

May be expanded by knurling or peening.

可以用滚化或锤击扩大

Methods The sphenoidal sinus was opened and then fracture of the optic canal was made by transnasal endoscopy with a hammer in 20 domestic cats, and optic nerve decompression was made 8 hours later.

鼻内镜下开放20只家猫的蝶窦，于蝶窦外侧壁锤击视神经管，造成视神经管骨折，8h后鼻内镜下行视神经管减压。

It has been warranted through experiments and practical application that rare-earths-high-aluminium heat-resistant nodular iron has some intrinsic properties which are worthy of reconimandation, namely,that it will not scale after long periods of use at 1050-1100℃, will hardly break while being hammered into castings, runners or risers as the high-temperature tensile strength reaches 14-19 kg/mm2 at 800℃ or≥l3.3kg/mm2 at 900℃, with the room temperature strength close to HT 30-50 and the unnotched impact str...

本文介绍了稀土高铝耐热球墨铸铁的生产实践、化学成分；探讨了稀土作用及其用量和控制；论述了稀土和铝加入方式以及冷却速度对金相组织的影响；并对铸造工艺、铸件缺陷及分析、耐热性能及使用效果作了阐明。试验和使用证明：稀土高铝耐热球墨铸铁在1050～1100℃长时间工作不起氧化皮，热强度800℃时，14～19kg/mm~2，900℃时≥13.3kg/mm~2，室温强度近于HT30—54，a_k≈2～6kg·M/cm~2，锤击铸件或浇冒口，很难碎裂，并能机械加工。可以认为是以我国富产资源为原料，能用各种炉子熔炼、耐热和综合机械性能均较高硅、中硅中铝球铁、高铝片墨铸铁为高的一种耐热铸铁，也是镍铬系耐热材料较好的替代品。

Wear proper protective gear such as goggles when sanding, chiselling, hammering overhead or scraping.

当铺沙，凿，锤击天花板或刮时，佩带适当的防护齿轮例如风镜。

The bamboo was spread out and hackled into bundles after different pretreatments.The rupture strength and fineness of the bamboo bundles were measured.

竹束是竹材(包括竹秆、竹筒、竹片和竹篾等)通过碾压或锤击梳解成通长的、相互交联并保持纤维原有排列方式的梳松束状单元，可作为重组竹或木竹重组材的构成单元[1]。

The structure of maize fluid hilling device was determined and air blowing agitation was utilized to reduce the seeds settlement and damage.The pressure control system was set to maintain fluid metering pressure to avoid uneven seed metering caused by the decrease in height and pressure of the fluid in the chamber.Siphon principle was applied to solve the problem of seed settlement and the hammering function in the siphon tube was utilized to avoid seeds blocking during metering.

完成了玉米流体穴播装置结构方案确定，采取压气搅拌混合方式，解决种子沉积和伤种问题；设置稳压控制系统，充分利用压缩空气来维持排液压力，克服播种过程中排种不均问题；利用虹吸原理解决种子沉积堵塞，并利用虹吸排种管中的锤击原理解决排种过程中的堵塞。

On it, the influence of trailing peening on the susceptibility to hot cracking is investigated.

并在此基础上，研究了随焊锤击对焊接热裂纹倾向的影响。

Hammer peening is a kind of very effective process relieving welding residual stress, which has many unique advantages, and was applied widely in engineering.

锤击处理是一种非常有效的消除焊接残余应力的方法，具有独特的优越性，在实际工程中应用比较广泛。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷