查询词典 accretion cutting

The planetesimals accretion s of the Earth obviously have two stages, including initial accretion and late accretion .

地球的星子吸积过程具有明显的两阶段性，即原地球吸积阶段和晚期吸积阶段，而后期的吸积过程对上地幔及地壳的化学成分不均一性的影响尤为显著。

Furthermore, the factors affecting cutting qualities and efficiency and The research result included: firstly, matching of the tractor"s moving velocity and the cutting velocity, the degree of tightness of the cutter chain, the height of stubble, the opening of the cutting protector and the interval between two adjoining blades, the matching of configuration parameters of blades are the main factors affecting the cutting quality and efficiency; secondly, the cutter"s dynamically cutting of the arundo donaxl includes three stages: touching, cutting-in and cutting-off; thirdly, the movement tracks of stalks of Arundo Donaxl, which are cutted off has been acquired.

试验研究得到以下结论：(1)机组前进速度与切割速度的匹配、链条的张紧度、割茬的高低、护刃器的开合度及相邻动切割刀片的间距以及刀片结构参数的匹配是影响芦竹切割质量和切割效率的主要因素；(2)切割器对芦竹的动态切割过程包括接触、切入和切断三个显著不同的阶段，各阶段存在不同的切割特征；(3)得出了切割过程中被切断作物茎秆的运动轨迹曲线。

Experimental study is practiced to examine AWJ cutting quality.By changing waterjet pressure and cutting speed,cutting kerf surface quality is studied.By the analysis of AWJ cutting mechanism and cutting process,the thesis explores the specific shape of the cutting section and its mechanism,and believes that the asymmetric distribution of abrasive jet's kinetic energy and jet's deflexion causing the formation of striations,waviness and cuspidate end.However,high-efficient cutting of AWJ could be achieved by...

对磨料水射流的切割质量进行了试验研究，通过改变水射流压力、切割进给速度来研究切割断面质量，对AWJ切割机理和切割过程进行了分析，探讨了AWJ切割断面的形貌特征及其形成机理，认为是射流断面磨料动能的分布不均和射流的偏转滞后造成了AWJ切割断面斜条纹和曲线及尖角处的尖端，提出了两种提高磨料水射流切割质量的方法。

A cutting tool has a first cuffing end, a second cutting end, a shoulder at an interface between the first cutting end and the second cutting end, and a shield removably mounted on one of the first cutting end and second cutting end.

一种切削工具，具有第一切削端，第二切削端，在第一切削端和第二切削端之间的交界面的台肩，可移除地安装到第一切削端和第二切削端之一上的罩。

Finish to design the micro CNC, I have to investigate the adaptable parameters for cutting. This paper had calculated tool's radius, spindle's rotational speed, radial depth, and feed speed by the instantaneous cutting areas of the cutting forces model. To find out the instantaneous cutting areas by mathematica which can calculate the tangential, radial and axial component of cutting forces during cutting.

设计完微型工具机后，接著探讨最佳的切削参数，本论文采用瞬时投影面积的数学模型，且推导出利用刀具半径、主轴转速、径向切深、进给速度等参数来做为瞬时切削投影面积的函数，并使用软体mathematica算出瞬间面积大小，预测出切削过程里所产生的切线切削力、径向切削力和轴向切削力。

Main products: the accurate four pillars automatic balance oil pressure bias cutting machine ,the accurate four pillars planer-type oil pressure bias cutting machine,rocker arm oil pressure bias cutting machine,oil pressure flat embossing machine,vertical four pillars oil pressure bias cutting machine, portable bias cutting machine,belt embossing machine, one spindle oil pressure bias cutting machine,sponge ball grinder, splitting machine,thicknesser,hammer machine,gluing machine,flanging machine,etc.

主要产品有：精密四柱自动平衡油压裁断机、精密四柱龙门式油压裁断机、摇臂式油压裁断机、油压平面压花机、立式四柱油压裁断机、箱式裁断机、皮带压花机、单头式油压裁断机、海绵磨球机、片皮机、刨板机、锤仔机、上胶机、折边机等。

On this basic, we use intelligent decision technology based on case reasoning to NC cutting parameter decision and analysis. According the characters of NC cutting parameter decision, we take decision based on NC techniques rule, cutting case matching based on similar degree and cutting parameter correcting based on rules to design and realize system. Combining many field technologies, it makes a unique method to resolve NC cutting parameter problem. This design pattern is a new thinking for NC cutting parameter process.

在此基础上，本文将基于实例推理的智能决策技术用于数控切削参数的决策分析，根据切削参数决策判断过程的特点，分别按照基于规则的切削加工方案决策—基于相似度的切削参数实例匹配—基于规则的切削参数实例修正的设计思路进行了系统设计和实现，多个领域的技术紧密结合，形成解决切削参数难题的独特方法，开辟了数控切削参数处理的新思路。

The outstanding feature of the new cutting dynamometer contrary to other type of dynamometer sensor is that it is more similar to general lathe tool. It can be installed on knife rest, so it is same wit practice state of cutting. Sensitivity of dynamometer is more high, especially main cutting force can attain 7.4pC/N. The calibration results show that it has high static linearity, and its natural frequency is greater than 5 kilohertz, so the cutting dynamometer has fully reached the dynamometer standard stipulated by CIRP-STCC.Finally, in order to measure the cutting force, the orthogonal experiment method in which the three factors are the diameter of cutting, feed and spindle speed is performed.

该新型车削测力仪与原有车削测力仪相比的突出优点是：它的外形接近一把普通的外圆车刀，可直接装夹在刀架上，与实际切削状态相同；传感器的灵敏度更高，尤其是主切削力方向可达到7.4pC/N；标定结果表明该传感器具有良好的线性静态特性，固有频率高于5kHz。

To adopt band type rail rolled by stainless steel and chain type drive method run circumferential movement along with the pipe to be cut by flame cutting carriage,cutting torch will run radial movement driven by ball bearing screw by step motor along with the pipe to be cut,the above two dimension movement compose to inclined cutting movement of cutting torch,the inspection of circumference position of cutting torch,the determination of radial position and return point of cutting torch all controlled by SCM.

为了满足钢管斜截切割的要求，建立了钢管斜截切割的数学表达式，采用不锈钢轧制的带形轨道和链式传动的方式使火焰切割小车沿被切钢管做周向运动，割炬沿被切钢管的轴向运动由步进电动机带动滚珠丝杠完成，上述两维运动合成为割炬的斜切运动，割炬周向位置的检测、割炬轴向位置及折返点的确定均由单片机控制完成。

This paper presents the Machining Tool geometry of the former flank, the main flank, flank, the main cutting edge, Under the cutting edge tip cutting plane, the main section, the former Kok, horn, wedge angle edge angle, pointed knife, the blade angle, vice horn, Under the Frontier concept, the concept of cutting consumption, and the general circumstances of their choice method for processing slender shaft. cast iron materials, aluminum, stainless steel, rubber materials, plexiglass material, cloth bakelite materials, high temperature alloys, aluminum-magnesium alloy, hardened steel, the typical trapezoidal thread, the thread Triangle, Speaking at the trapezoidal screw thread pitch of the Tool geometry of the selection methods and cutting the amount of cutting fluids reasonable choice.

本文介绍了在机械加工中车刀几何角度中的前刀面、主后刀面、后刀面、主切削刃、副切削刃刀尖切削平面、主截面、前角、后角、楔角主偏角、刀尖角、刃倾角、副后角、副前角的概念、切削用量的概念、以及一般情况下的它们的选择方法，进行加工细长轴、铸铁材料、铝合金、不锈钢、橡胶材料、有机玻璃材料、夹布胶木材料、高温合金、铝镁合金、淬火钢、典型梯形螺纹、三角螺纹、特在螺距的梯形螺纹等的车刀几何角度的选取方法切削用量及切削液的合理选择。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。