偏心

A segment can be used in drirving system of cold tube mill to balance the inertial force and inertial moment in operation.

为平衡普通冷轧管机传动系统内的部分惯性力与惯性矩，在偏心齿轮上配以平衡用扇形块。

In order to provide references for the ground separation tests and the separation system design, characteristics of the constrained and centroid biased on-orbit satellite separation were analyzed in inertial reference frame.

为了给分离地面试验和分离系统设计提供依据，在惯性参考系中分析了筒式偏心在轨分离问题的运动特性。

Because the workpiece is in dynamic balance, the resultant moment acting on it should be zero. Introducing the moment from lapping tool and press head a moving differential equation is built. In this equation only workpiece rotating speed is unknown. It means that workpiece rotating speed can be got by this equation. Since there is a transcendental function in integral function of the equation an analytic result can not be got, only digital result can be got by a computer. Thus a change rule of workpiece rotating speed with lapping parameters is known, e.g. the radius of press disc ball socket, radius of press head ball, the distance between the workpiece rotating axis and lapping tool rotating axis, workpiece radius, modulus of elasticity of the press head and press disc, friction coefficients between the lapping tool and workpiece, and between the head and disc, pressure between the lapping tool and workpiece and pressure between the press head and press disc.

因工件处于动态平衡状态，其上所受到的来自于磨具和压头的力矩应相等，将二力矩表达式联立，建立工件运动微分方程，该方程中只有工件的旋转角速度是未知量，因此可以求出工件旋转角速度，但该方程积分式中含有超越函数，得不出解析解，只能通过计算机求出数值解，得出工件旋转角速度随各研磨参数的变化规律，如压盖球座半径、压头的球头半径、工件回转中心相对磨具回转中心的偏心距、工件半径、压头和压盖材料的弹性模量、磨具与工件间的摩擦系数、压头压盖间的摩擦系数、磨具与工件间的压强、压头压盖间的压力等。

The factory's main products are drilling accessories, 250,350 of oil, gas, water wellhead and accessories, eccentric wellhead, simple wellhead, anti-theft wellhead, Our expertise valve, Jiaopi valves, the Kazi, high and medium pressure valve, closing Valves, check valves, ball valves, needle-valve, butterfly valves, and customers may be asked to accept orders and new product development.

本厂的主要产品有钻采配件，250、350型采油、气、水井口及配件系列，偏心井口，简易井口，防盗井口，卡箍阀，胶皮阀门，方卡子，高中压闸阀、截止阀、止回阀、球阀、针型阀、蝶阀，并可按客户要求接受定货和新产品的研制。

Objective To study the pattern of ablation, evaluate centration and stability following excimer laser photorefractive keratectomy for myopia.

目的 分析准分子激光屈光性角膜切削术(photorefractive keratectomy， PRK)术后角膜切削区的形态、偏心情况和屈光的稳定性。

Forging press, eccentric press, trimming press, knuckle joint coining and embossing press, pneumo-hydraulic hammers, rolling mill, cross wedge rolling machine, screw press.

锻压机，偏心压力机，整修压力机，关节接头模压和凹凸压力机，气动液压锤，轧钢机，横向楔形轧钢机，螺旋压力机。

Circumferential field intensity can be calculated by solving Laplace's equation in field domain or by finite-element method.

计算带偏心母线的圆环铁芯磁场的不对称分布有助于分析母线型和套管型电流互感器的误差特性，从而提出科学的计量方法。

Spindle out - of - center with ring and lappet.

锭子偏心，与导纱钩板和钢领不在一条直线上。

The mechanical measurement is to use an indicator to measure the surface or the edge of the testing lens mounted in a specific holder in a contact way. The principle of the optical measurement is the geometric optics, utilizing the properties of refraction or reflection of light to detect the centering error of the testing elements in a contactless way.

机械式的测量是利用指示器配合治具对待测透镜之外缘或表面进行接触式测量；而光学式的测量原理则是利用几何光学的折射或反射性质，对待测元件进行非接触式的偏心误差量测。

We placed the lens holder, testing lens, and the assistant lens in the testing optical path. When the testing lens was mounted in the lens holder, we took five dynamic interferograms. After rotating the testing lens by 180 degrees along the edge of the testing lens, we took another set of interferograms. Then, we could evaluate the centering error of the testing optical element by analysing these two sets of interferograms.

在待测光程中加入透镜治具、待测透镜与辅助透镜，当待测透镜贴靠於透镜治具，此时撷取五张连续相移干涉图，之后由待测透镜配合透镜治具沿待测透镜外缘旋转180度，再撷取另一组干涉图形，最后由两组干涉图进行分析，以测量光学元件的偏心误差值。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷