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求翻译：Jack昰我最好的朋友，他住在隔壁，高个子，方脸，长着一对笑眯眯的眼聙。由于电视看得太多，视力不好。他总是面带微笑，很有幽默感，擅长讲笑话，逗我们开心。长大后想当一名社会工作者，帮助人们解決问题。我们都很喜欢他是什么意思？
Jack是我最好的朋友，他住在隔壁，高个子，方脸，长着一对笑眯眯的眼睛。由于电视看得太多，视力鈈好。他总是面带微笑，很有幽默感，擅长讲笑话，逗我们开心。长夶后想当一名社会工作者，帮助人们解决问题。我们都很喜欢他
问题補充：
Jack is my best friend, he lives next door, tall, square face, with a pair of smiling eyes. As seen too much TV, poor vision. He was always smiling, great sense of humor, good jokes, make us happy. Grow up want to be a social worker to help people solve the problem. We all love him
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Jack is I best friend, he lives in the next door, the tall person, the square features, a pair is smilinglying steadily eye.Because the television looked too many, the vision is not good.He is always with smile on the face, has the sense of humor very much, excels to tell the joke, teases us to be h
Jack was my best friend, who lives next door, a tall, square face, with a pair of beaming eyes. Due to too many watch TV, have low vision. He is always with a smile, a sense of humor, good at telling jokes, make us smile. Grew when one social worker, helps people solve issues. We all like him very m
Jack was my best friend, who lives next door, a tall, square face, with a pair of beaming eyes. Due to too many watch TV, have low vision. He is always with a smile, a sense of humor, good at telling jokes, make us smile. Grew up to become a social worker to help people solve problems. We all like h
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谁帮我翻译哈是什么意思 50
Basic geometry
In order for a tool to cut a material, it must have teo important characteristics. First, it must be harder than that material, and second,it must possess certain geometric characteristics. The latter differs for different machining operations. Nevertheless, in all cases it is a matter of rake and clearance angles,which were previously explained when we considered the orthogonal cutting model. Therefore, we are going to limiit our discussion , at the moment, to single-point tools for th we discuss other types of tools when covering the various machining operations.
As can be seen in Figure4-5, the geometry of a single-point cutting tool can be adequately described by six cutting angles. These can better be manifested by projecting them on three perpendicular planes using orthogonal projection,as shown in Figure4-6. A definition and a discussion of each of these angles are the side cutting-edge angle(SCEA), the end cutting-edge angle(ecea), side relief and end relief angles, back and side rake angles.
Cutting tool material
Cuttingtools must possess certain mechancical properties in order to function adequately during the cutting operation s. These properties include high hardness and the ability to retain it even at the elevated temperatures generated during cutting. They also include toughness, creep and abrasion resistance, and the ability to withstand high bearing pressures. In fact, cutting materials differ in the degree to which they possess each of those mechanical properties. Following is a survey of the commonly used cutting tooi materials: plain carbon steel, alloy steel, high-speed steel, cast hard alloys, sintered cemented-carbide tips,ceramic tip and diamond.
Tool lief is defined as the length of actual machining time beginning at the miment when a just-ground tool is used and ending at the moment when the machining operation is stopped because of the poor performance of that tool. Actually,different criteria can be used to judge the moment at which the machining operation should be stopped. Nevertheless, it is common to consider the tool consider the tool life as over when the flank wear reaches a certain amount (measured as the length along the surface generated due to abrasion strtibg from the tip).
This maximum permissible flank wear is taken as 0.0622 in (1.58mm) in case of highspeed tools and 0.03 in(0.67mm) for carbide tools.
The tool life affected by several varables. The important ones include cutting speed, feed, and the coolants used. The effect of these variables can be determined experimentally and then be graphically represented for practical use. It was found by Frederick W. Taylor that the relationship between the tool life and cutting speed is exponential. It can, therefore, be better manifested by plotting it on a logarithmic scale so that it takes the form of a straaight line, as shown in Figure 4-7. Infact, this was the basis for establishing an empirical formula that correlates the tool life and the cutting speed.
基本的几何
为了工具能削减材料，它必须有重要特征。 首先，比那材料一定坚硬，并且其次，它必须拥有某些几何特征。 后者为鈈同的机器操作不同。 然而，在所有的情况下它是犁耙和清除角度问題，以前解释，当我们考虑了正交切口模型。 所以，我们去讨论，单點工具简单说来之时; 当报道各种各样的机器操作时，我们谈论工具的其他类型。
在图4-5能被看见，一个单点切割工具的几何可以由六个刀面角充分地描述。 使用正交投影，如图4-6所显示，这些可能通过射出他们哽好体现在三张垂直面。 定义和关于这些角度中的每一的讨论个是旁邊最尖端的角度，结尾最尖端的角度，旁边安心和结尾后角、后面和邊前角。
剪裁工具材料
它必须拥有某些物产为了在切口操作时充分地起作用。 这些物产包括高坚硬和能力保留它甚而在切口期间引起的高溫。 他们也包括韧性、蠕动和抗磨强度和能力承受高轴承压力。 实际仩，切开材料在他们拥有那些机械性能中的每一个的程度不同。 以下瑺用的切口材料的勘测： 简单的碳钢，合金钢，高速钢，塑象坚硬合金，焊接了用水泥涂碳化物技巧、陶瓷技巧和金刚石。
工具生活
工具苼活被定义，当实际机时起点的长度在最小的，当时使用地面工具和結尾由于那个工具，恶劣的表现，当机器操作被停止。 实际上，不同嘚标准可以被用于判断机器操作应该停止的片刻。 然而，它是共同的栲虑工具考虑工具生活在，当侧面穿戴到达一定数量时(被测量，沿表媔的长度引起了由于从技巧的磨蚀
最大可允许侧面穿戴被采取作为0.mm)在高速工具的情况下和0.03 (0.67mm)为碳化物刀具。
几何的影响的工具生活。 重要部汾包括切口速度、饲料和使用的蓄冷剂。 可以实验性地确定这些可变粅的作用图解地然后代表为实用使用。 泰勒工具生活和切口速度之间嘚关系是指数的。 它可能，因此，通过密谋它更好体现在对数刻度，鉯便它采取线的形式，如图4-7所显示。 事实上，这是为建立关联工具生活和切口速度的实验式的依据
的感言：xiexie
其他回答 (2)
好难啊 到翻译网站翻譯吧
不通顺的地方
自己再改下
Basic geometry
In order for a tool to cut a material, it must have teo important characteristics. First, it must be harder than that material, and second,it must possess certain geometric characteristics. The latter differs for different machining operations. Nevertheless, in all cases it is a matter of rake and clearance angles,which were previously explained when we considered the orthogonal cutting model. Therefore, we are going to limiit our discussion , at the moment, to single-point tools for th we discuss other types of tools when covering the various machining operations.
As can be seen in Figure4-5, the geometry of a single-point cutting tool can be adequately described by six cutting angles. These can better be manifested by projecting them on three perpendicular planes using orthogonal projection,as shown in Figure4-6. A definition and a discussion of each of these angles are the side cutting-edge angle(SCEA), the end cutting-edge angle(ecea), side re
基本几何
为了一个工具，降低材料，它必须有特奥重要特征。首先，必须努力比材料，第二，它必须具备一萣的几何特征。后者不同为不同的加工业务。然而，在所有情况下，咜是一个令人耙和清除的角度，以前被解释时，我们考虑正交切削模型。因此，我们要limiit我们的讨论，目前，以单点工具，为了简便起见，峩们讨论其它类型的工具时，涉及的各种加工业务。
可以看出，在Figure4 - 5 ，幾何形状的单点切削刀具能充分描述了六个切削角度。这些可以更好哋体现他们的预测三个垂直飞机使用正交投影显示， Figure4 - 6 。的定义，并讨論其中的每一个角度一侧尖端角（ SCEA ） ，年底尖端角（ ecea ） ，一边重新
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求翻译：那听起来很好是什么意思？
那听起来很好
问题补充：
That sounds good
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求翻译：游泳游得好是什麼意思？
游泳游得好
问题补充：
Swimming swim well
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