两刃的

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。

For the word of God is quick and powerful, and sharper than any two edged sword, piercing even to the dividing asunder of the soul and spirit and of the joins and marrow and is a discerner of the thoughts and intents of the heart.

神的道是活泼的，是有功效的，比一切两刃的剑更快，甚至魂与灵，骨节与骨髓，都能刺入剖开，连心中的思念和主意，都能辨明。希伯来书 4：12

For the word of God is quick, and powerful, and sharper than any twoedged sword, piercing even to the dividing asunder of soul and irit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart.

4：12 神的道是活泼的，是有功效的，比一切两刃的剑更快，甚至魂与灵，骨节与骨髓，都能刺入剖开，连心中的思念和主意，都能辨明。

HEB(4:12) For the word of God living and operative, and sharper than any two-edged sword, and penetrating to division of soul and spirit, both of joints and marrow, and a discerner of the thoughts and intents of heart.

来(4：12)神的道是活泼的、是有功效的、比一切两刃的剑更快、甚至魂与灵、骨节与骨髓、都能刺入剖开、连心中的思念和主意、都能辨明。

Darby: HEB(4:12) For the word of God living and operative, and sharper than any two-edged sword, and penetrating to division of soul and spirit, both of joints and marrow, and a discerner of the thoughts and intents of heart.

和合本：来(4：12)神的道是活泼的、是有功效的、比一切两刃的剑更快、甚至魂与灵、骨节与骨髓、都能刺入剖开、连心中的思念和主意、都能辨明。

A single-point tool has only one cutting edge, while a multiple-point tool has two or more cutting edges.

单刃刀具只有一个切削刃，而多刃刀具有两个或两个以上的切削刃。

He turned for one instant to the front line, and swinging his arms a little, with the awkward, lumbering gait of a man always on horseback, he walked forward over the uneven ground.

这里举行了一次进攻，梯也尔提及进攻时说：俄国人表现得英勇豪迈，这是战争中罕见的事。两队步兵坚毅地以白刃相迎，无一方作出让步，直至决一死战。

New Chamfering tools to perform drilling, milling, spotting, countersinking and chamfering operations

除了ITC研制的钻孔线和4111系列倒角工具，现又研发了2141计算机网络系列的两刃铣钻刀具。

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。

Cografts point in general there are two: vertical tool grinder mill out of an arc-shaped blade angle, as in Figure 2 illustrated horizontal grinder mill out of cografts is straight, as in Figure 2 is shown below.

刃角通常情况下有两种：用立式磨刀机磨出的弧线型刃角，如图2所示；用卧式磨床磨出的刃角为直线型，如图2所示。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。