中心圆

The direction of the line is parallel to laser beam and propagates through the center of the disk,which is sensitive to center excursion and insensitive to the incline of the disk.

Poisson线对圆屏的倾斜非常不敏感，但是对中心的偏移非常敏感。

It is possible to trap transversely the double-layer spherical particle with absorption on the axis of the incident Gaussian beam and on a circle centered at the optical axis for different axial offsets of sphere center from the beam waist as well.

在一定条件下，带吸收的双层球形微粒可以被俘获在光轴上，也可能被俘获在中心在光轴上的圆环上。

Ma'anshan De'ermeng Heavy Industry Machinery Co., Ltd. was founded in 2003 which has introduced the United States DNYA vertical machining centers and CNC numerical control machine tools and owned mechanical processing, centrifugal casting, precision casting, forging, heat treatment and other production workshops etc.. Besides, our company is the IS09001: 2008 quality certification company and own sophisticated equipment and completely testing methods. The main products of our company include the series of machine tools , hydraulic notching machine, joint punching machine, metallurgical spare parts type, mill stick road, Cold-rolled straightening roller, wear and heat-resistant lining ,the furnace slip block, roller, reverse roller, pinch roller, rail beam correction circle, saw drilling machine spare parts, mid-thick plate, hot-rolled plate blade, vertical disk Scissors blades, and other demanding mechanical spare parts.

马鞍山德尔盟重工机械有限公司成立于2003年，是一家集工、贸于一体化的企业，长期与意大利、台湾地区技术合作，公司引进了美国DNYA立式加工中心及CNC数控机床，并拥有机械加工、离心铸造、精密铸造、锻造、热处理等生产车间，设备精良，检测手段齐全，系IS09001：2008质量认证企业，主要生产机床类、液压切角机、联合冲剪机、冶金备件类、轧机棍道、冷轧矫平辊、耐磨、耐热衬板、炉内滑块、滚轮、扭转辊、夹送辊、轨梁轿正圈、锯钻床备件、中厚板、热轧板刀片、纵剪圆盘剪刀片、等高难度机械备件。

The factory has a modern professional test block production lines, mold production lines, with high-precision optical coordinates boring machine, CNC EDM, line cutting, CNC lathes, milling machine, processing center, with high-precision surface grinder, both inside and outside grinder, Curve grinder, NC engraving machine, and try block flat bottom hole covered inspection techniques, porous high-precision measuring instrument and multi-digital, analog ultrasonic flaw detector, test equipment, such as complete sets of professional quality equipment Bai Yutai, with more than 10 heat treatment equipment Taiwan, and has strong new product development capacity.

本厂具有现代化的专业试块生产线，模具生产线，拥有高精度光学座标镗床、数控电火花、线切割，数控车床、数控铣床、加工中心，拥有高精度平面磨床、内外圆磨床、曲线磨床、数控雕刻机，以及试块平底孔覆膜检验技术、微孔高精度测量仪，多台数字、模拟超声波探伤仪器、专业成套检测仪器等优良设备百余台，拥有热处理设备十余台，并具有较强的新产品开发生产能力。

NGC 4945 appears cigar-shaped from our perspective on Earth, but the galaxy is actually a disc many times wider than it is thick, with bands of stars and glowing gas spiraling around its center.

从地球的角度来看，星系 NGC4945就象一根雪茄，但实际上该星系是圆盘状的，其直径是厚度的许多倍。排列成条状的恒星以及炽热的气体在中心周围盘旋。

On a wall of paper, Latham drew a simple form, such as a cone, at the top center, and then filled the rest of the space with gradually complexifying cone shapes.

在有一墙之高的论文上，拉萨姆绘制了一个简单形态，比如在顶端中心的一个圆椎体，然后用逐渐复杂的圆锥体形态填满剩下的空间。

With a spring installed inside table, you can move it up and down, and it can adjust the pressure, swing it before and after by eccentric wheel and pulley. The swing margin is about 12 degrees. The platform was installed in the L-plate and can correct center to ensure die non-deformation and roundness in polishing process.

工作台里面安装弹簧一根，可以上下移动，并可任意调整压力，利用皮带轮和偏心轮带动，使前后摆动，摆动幅度约12度，而工作台被安装在 L 型拖板上可以任意地对中心，确保在抛光的过程中，使模具不变形及圆度。

When ethanol goes into the red blood cells, osmotic pressure changing causes the cell vertices moving to the center, and double-concave disc surface will be the spherical one. It results in the red blood cell volume larger and surface area smaller, causes the ratio of the surface area and volume significantly decrease, and the resistance tensile capacity of red blood cells reduced.

分析认为乙醇进入红细胞后，由于渗透压的变化将使细胞顶点向中心移动，双凹形的圆盘曲面将向球形细胞转变，导致红细胞体积变大和表面积的减少，引起红细胞表面积和容积的比值显著变小，红细胞的抗张能力降低。

It'd be easier to drill the mounting hole on-center, for one, and more importantly, it'd no longer be necessary to install the temporary hardware required to keep the round tube from rotating during cutting.

希望它能在更容易安装孔钻的中心，为一个，更重要的是想不再需要安装所需的临时硬件，以防止在切割旋转圆管。

Dragon Boat Festival, the scale of the drum by the team in all directions into their respective regional centers, drum Cup get-together, or dozens of people ranging from a few hundred, according to the different rhythm of drums, dancing and make a different shape, the basic dance steps for the ceremony and Wealth to changes in the round of the dance hall, such as duckweed surface of the water, swimming in light.

端午节，规模宏大的鼓队由四面八方涌进各自地域的中心，赛鼓联欢，数十人或数百人不等，根据不同的鼓点节奏，做出不同的舞姿和造型，基本舞步为进行式而富于变化的圆舞场，如水面浮萍，轻盈游动。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。