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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。

In the spiral pipe heat exchanger exports terminal, the ammonia steam temperature has been heated up 85 ℃--95 ℃, by now, the ammonia steam had the 45kg-55kg/cm2 ammonia steam pressure, sent in the ammonia steam turbine through the constant temperature pipeline, impelled ammonia steam turbine revolving, led the generator electricity generation;After the ammonia steam makes the merit release energy, the temperature drop, the returns ammonia storage tank, passes through again adjusts the press pump to press into the spiral pipe-type heat exchangers to carry on the next circulation;Including the ammonia steam turbine entire ammonia steam road is becomes the independent closed cycle system, is isolates completely with the outside air;The ammonia steam only plays the carryhome and the shift energy role, in the electricity generation process does not consume the actuating medium, the stored energy carrier water also is only gets up the carryhome and the shift energy function,The waterway also is from becomes the independent closed cycle system, in the electricity generation process also the needless water consumption, through the actuating medium ammonia steam and the stored energy carrier water unceasing shuttle service, transforms through the heat interchanger the solar energy as the actuating medium ammonia steam heat energy and the kinetic energy,With the aid of the ammonia steam turbine heat - machine transformation function and the generator machine - electricity transformation function, has realized the solar energy hot - electricity entire conversion process, transforms continuously the solar energy into the electrical energy, power supply for foreign;The low temperature generating system must solve three big technical keys:One, the anticorrosion (has actuating medium has strong corrosiveness), two is Explosion-proof (Some actuating medium Can have the detonation with the air mix when divulging, controls warm malfunction, elevates temperature suddenly also can have detonation), three is guards against the revolution axis divulging

以太阳能低温发电系统为例，低温发电方法是这样进行的：以水作为储能载体的太阳能采集器将太阳能采集起来，将水温提升至85℃--98℃；用氨作为工作介质储于氨储罐及氨汽路中；采用螺旋管型热交换器；用调压泵将氨储罐中的氨汽压入螺旋管型热交换器的螺旋管内，用调压泵将携带太阳能的85℃--98℃的储能载体热水压入螺旋管型热交换器的螺旋管外壁空间进行循环式热交换，在热交换器的螺旋管出口端，氨汽温度已被加热到85℃--95℃，这时，氨汽具有45kg—55kg/cm2的氨汽压力，通过恒温管道送入氨汽轮机，推动氨汽轮机旋转，带动发电机发电；氨汽作功释放能量后，温度下降，返回氨储罐，再经调压泵压入螺旋管型热交换器进行下一次循环；包括氨汽轮机在内的整个氨汽汽路是自成独立的封闭循环系统，与外界空气是完全隔绝的；氨汽只起携带和转移能量的作用，发电过程中并不消耗工作介质，储能载体水也是只起携带和转移能量的作用，水路也是自成独立的封闭循环系统，发电过程中也不消耗水，通过工作介质氨汽和储能载体水的不断循环运行，通过热交换器将太阳能转化为工作介质氨汽的热能和动能，借助氨汽轮机的热—机转化功能和发电机的机—电转化功能，实现了太阳能的整个热—电转化过程，将太阳能源源不断地转变为电能，对外供电；低温发电系统要解决的三大技术关键：一是防腐（有的工作介质具有较强的腐蚀性）、二是防爆（有的介质泄漏与空气混合会产生爆炸，控温失灵，急剧升温也会产生爆炸）、三是防轴漏（汽轮机是动态旋转体，必须解决工作介质的防轴漏问题）。

In this thesis, I summarize the theoretical calculation method, applied scope and notice of siphonic drainage system, and point out the advantage of siphonic drainage system compared with gravitation drainage system. In the archetype experiment study of siphonic drainage tube, I adopt different tube diameter and different structural height to survey the drainage volume and press in different place. I observe various kinds of flow state, and get chief factors which influence hydraulic peculiarity of system as the tube diameter or structural height, and find out the relevance of factor to flux. I apply CFD Fluent software and adopt standard k-ε model and RNG k-ε model, then use finite volume method and second-order upwind scheme to discrete numerical model, while coupling numeration of velocity field and press is based on SIMPLE. In the numerical simulation of curved part of tube, siphonic drainage tube experiment system and multi-outlet siphonic drainage system, I make research on internal velocity and press of system in different project condition by changing the tube diameter of curved part, negative press value in tube export and improving the quantity of water gutter. This thesis first adopts a method of combining archetype experiment and numerical simulation to study the siphonic drainage system, test and verify the validity of experiment and numerical simulation, and makefurther study on system, it solves the problems of limited testing conditions, and has a logical results, it can provide a valid method for optimizing and designing the drainage tube-net system. The conclusion have referring value for study and design of siphonic drainage system.

本文首先对虹吸式排水系统理论计算方法、适用范围以及注意事项做出总结，并分析了虹吸式排水系统的优势；再对虹吸式排水管道进行原型试验研究，采用不同管径不同立管高度，对系统流量、管道压强进行量测，观察了各种工况下的流态，对其水力特性进行研究分析，找出影响水力特性的落差、管径主要因素以及与排水量的关系；进一步应用计算流体力学Fluent软件，采用标准κ-ε模型与RNGκ-ε模型，计算过程应用有限体积法和二阶迎风格式对数值模型进行离散，速度和压力的耦合采用SIMPLE算法，分别对系统弯管段、虹吸排水管道试验系统、多斗虹吸式排水系统进行数值模拟分析，通过改变管段弯头处半径、管段出口负压值、增加雨水斗数对不同工况下系统内部的速度和压力进行研究；本文首次采用结合原型试验与数值模拟相结合的方法，对虹吸式屋面雨水排水系统进行研究，试验与模拟相互验证，并进行拓展，很好地解决了虹吸式屋面雨水排水系统由于试验条件限制问题，结果正确合理，为排水管网系统设计和优化研究提供了有效的方法，对工程设计有较好的参考价值。

MILAN - Filippo Inzaghi is the winner of the 16th edition of the 'National Gaetano Scirea prize', a recognition assigned by the specialised press on occasion of the presentation of the Scirea memorial, a tournament organised by the Gruppo Sportivo Serenissima San Pio X in collaboration with the Comune di Cisinello Balsamo.

米兰-因扎吉成为第16届西雷阿奖的获得者，该奖项由专业媒体投票产生，在Gruppo Sportivo Serenissima San Pio X和Cisinello Balsamo公社联合举办的西雷阿纪念赛期间举行颁奖仪式。

A new measurement system for electrical conductivity in an YJ-3000t press fitted with a wedge-type cubic anvil was set up on the basis of the old one. A solartron 1260 impedance/Gain phase analyzer was used in the new system; Mo electrodes and a Mo shield were also used to keep oxygen fugacity close to the Mo-MoO〓, which is similar to that of iron-w〓stite .

在YJ—紧装式六面顶压机上，对原有的矿物、岩石电性测量系统进行了进一步的改进；建立了一套以Solartron 1260阻抗/增益—相位分析仪为测试仪器，使用Mo电极和Mo盾来控制样品氧逸度的测量系统，该系统的氧逸度环境为Mo—MoO〓，接近IW缓冲对。

The plane will include four computers, two copying machines, conference rooms, crew bunks, sleeper chairs, a press room with TV monitors, and secure phone lines that can rouse U.S. network anchormen from anyplace on the earth and 45,000 ft. up.

机上还有四台计算机、两部复印机、会议室、机组人员铺位、躺椅、装有电视监视器的记者室以及不论在地面还是在四万五千英尺高空均可随时随地呼唤美国广播网现场报道员的安全可靠的电话线路。

Drum brake is also called block brake with which drives can brake the car by making the brake block press on brake pulley. Brake block is located inside of brake pulley and it will spread out and chafe against the inside of brake pulley when braking, so the car will stop.

鼓式制动器也叫块式制动器，是靠制动块在制动轮上压紧来实现刹车的，它的制动块位于制动轮内侧，在刹车的时候制动块向外张开，摩擦制动轮的内侧，达到刹车的目的。

In this paper, the web tension variation regularity is studied based on the printing test-bed with shiftless driver in printing. This paper offers the basis for establishing the tension control of web press. It is very significant for improving the speed and quality of web press and reducing the difference between domestic press and oversea advanced press.

本课题基于无轴试验平台研究了卷筒纸印刷机纸带张力变化规律，为建立印刷机张力控制系统提供依据，这对于提高国产印刷机速度和质量，缩短与国外先进印刷机的差距有着重要的意义。

Through the various ways of joint-stock, cooperation, and technology introduction, etc., the group has developed the BEIREN 104 Four-color Sheet-fed Offset Press with internationally acclaimed technical features, commercial web offset press, business forms printing press, gravure printing press, die-cutting press, perfect binding line, etc., the products badly needed on the market, thus having formed a almost complete product system from printing to post-press section being capable to meet fully the requirements of the printing process.

通过合资合作、技术引进等多种形式开发出具有国际水平的北人104型平版四色胶印机、商用轮转平版胶印机、表格机、凹印机、模切机、无线胶订联动线等市场急需的新产品，形成从印中到印后，能充分满足印刷工艺要求较为完整的产品体系。

Edmonton printing Ezhou Founded in 1999, is based on creativity, design, production, printing as one of the fast color printing company with registered capital over 200 million, with four°Group opened four-color offset press, and single-color offset press the Units 1, Ichang production Units 1 digital cutter and other auxiliary equipment 5 sets, the Shanghai production limit Printer Wide Units 1, 4 computer system designed sets and so on; has formed Prepress, Printing China, India, after Process one-stop services are supporting the printing industry Ezhou most, one of the largest enterprises.

鄂州市爱民印刷厂成立于1999年，是以创意、设计、制作、印刷为一体的快速彩色印刷企业，公司注册资金200多万元，拥有中景集团四开四色胶印机和单色胶印机各1台，宜昌产数码切纸机一台及其它辅助设备5台套，上海产极限宽幅喷绘机一台，电脑设计制作系统4台套等；已形成印前、印中、印后工艺一条龙服务，是鄂州市印刷行业配套最全、规模最大的企业之一。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。