刃

In this paper, the waved-edge force model is deduced on the basis of straight edge force model by use of the curve integral principle. This method is suited to the case for the complex 3-D grooves of random curve edge.

在直线刃铣刀片模型的基础上，利用曲线积分原理，建立了波形刃铣刀片铣削力数学模型，该方法可适用于任意曲线刃的三维复杂槽型的情况。

Solid carbide tungsten fishtail drill is suitable for pcb flexible foil clad laminate,used for target machine drilling,the features of pcb fishtail drill are thin and flexible plate,it's structure and cutting methods are different with normal pcb drill bits.its two main cutting edge is concave and formed 100degree angle,in order to distinguish with PCB drill,named fishtail drill.fishtail drill cuts beginning of circular drill.concave along the main cutting edge to cut,chip is just two much fine filament.cuttingis falling off naturally,in order to be processed without burrformation by pcb surface.

整体硬质合金鱼尾钻适合印制电路板行业加工挠性覆箔板，为打靶机钻孔用。鱼尾钻所加工的印制电路板特性是薄板、带柔性、这样就决定了它的结构和切削方式与一般PCB钻不一样，它的两主切削刃是内凹的，两主切削刃形成100度的夹角，为了与PCB钻区别，就叫它鱼尾名。鱼尾钻切削时从我圆处钻尖开始，沿着内凹的主切削刃切削，切屑只是两条极细丝状切削，整个切削自然剥落，从而被加工印制板表面平整无毛刺。

Applicable to 2,3,4,6 flutes HSS end mill, carbide end mill,reamer.

可刃磨2，3，4，6槽的高速钢铣刀，硬质合金铣刀的端刃和螺旋刃。

Cutter blade in the face of the modeling, this paper presents a basic model of ideological confrontation flank milling reasoning and mathematical algorithm: First, the establishment of the cutter edge cross-section curve and the equation ruled surface and then through the algorithm to generate cutter rake face and the flank, Bezier curve-based algorithm to generate the surface of the spiral groove cutter in order to achieve the opposite blade face milling modeling.

在立铣刀的刃面的建模方面，本文提出了一种基本的建模思想对立铣刀的刀面进行数学推理和算法实现：首先建立立铣刀的刃口曲线及横截面的方程，然后通过直纹面生成算法建立立铣刀的前刀面和后刀面，通过基于Bezier曲线的曲面生成算法建立立铣刀的螺旋槽，从而实现了对立铣刀刃面的建模。

Five species belonged to five genera were extracted from soil samples which were Helicotylenchus digonicus, Tylenchorhynchus maximus, Psilenchus hilarulus, Filenchus vulgaris and Aphelenchus avenae. Except A.

结果表明：从洋葱根际土壤样品中共分离鉴定出线虫5个属5个种，包括喜悦平滑垫刃线虫、普通丝尾垫刃线虫、双角螺旋线虫、最大矮化线虫和燕麦真滑刃线虫。

The phytoparasitic nematodes of Tylenchus appeared in a great lot after cultivation,even though there was only a few could be found in the corms before cultivation.

本研究结果初步表明拟滑刃属、滑刃属和垫刃属线虫具有较高的潜在危险性，其他检出的植物线虫类群潜在风险较小。

The Chinese must acknowledge some facts and be able to see that their works are, generally, like a blade -- either chipped or unsharpened.

刀口要先开刃。我们必须注意到某些基本的事实，注意到我们的作品通常要么是卷刃的，要么是不开刃的。

There are two spots at least on refaced knife-line are superposition with precision knife-line, and the error between actual shovel-tooth surface and theoretical side blade surface is analyzed according to general grip theory.

重磨后的每刃线上至少有两点与精确刃线重合，按共扼理论分析实际齿面与理论侧刃面之误差，并通过参数优化使误差最小化，实现滚刀的铲磨加工。

It will promote the progress of hole making thechique and accelerate the automatization course of the tool production in our country. In addition, the author analyzes a drill grinding unit on a machining center and present a new grinding model for grinding four-plane facet drill points, which will be a new way of drill grinder design.

此外，作者还分析了一台加工中心上的钻头刃磨装置，提出了一种两轴合成四平面钻尖的刃磨理论，并对其应用前景进行了初步探讨，为钻头刃磨方法和刃磨机的研制开辟了一条新的途径。

Firstly, using diamond wheels bonded by metal, resin and ceramic respectively, experiments about the influence of wheel speed, wheel swing frequency and coolant on grinding surface quality was done and the reason why parameters can influence the grinding surface roughness was deeply analyzed.

首先，分别对金属结合剂、树脂结合剂和陶瓷结合剂金刚石砂轮刃磨PCD刀具时刃磨表面粗糙度受砂轮速度、砂轮摆频及干湿磨削条件的影响进行了对比试验研究，深入分析了刃磨工艺条件对刃磨表面粗糙度的影响及其原因。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。