工作平台

7 Mm casing drilling technology in batch drilling on the Chenghai-1 platform in Dagang Oilfield was introduced in detail,including tools used in casing drilling,structures and principles of casing driver and the casing shoe,major equipment requirements of casing drilling,drilling process,and cementing techniques without drilling rig.

简要介绍了套管钻井技术的工艺特点及国内外研究现状，详细介绍了φ339.7 mm套管钻井技术在大港油田埕海一号平台批钻井中的应用情况，包括套管钻井使用的工具———套管钻井驱动器和套管钻鞋的结构和工作原理；套管钻井的主要设备要求、工艺流程以及无钻机固井工艺。

Both the economic and social benefits of the Challenge Cup will be improved.

本次赛事的举办将在借鉴前几届&挑战杯&竞赛组织方成功举措的基础上，充分利用地域优势，结合复旦大学和上海市举办大型活动的工作经验，举行科研成果展示会及科研成果转化的经贸洽谈会等活动，提供广大项目和项目作者了解熟悉市场运作、和投资方洽谈的平台，大力促进&挑战杯&科技竞赛与地方经济建设有机结合，积极推动科技成果转化，进一步提高&挑战杯&的经济与社会效益，让这次大赛成为向国人、向世界展示上海风范，展示复旦大学名校风采的窗口。

On the basis of intervene area of two platforms of die cutting machine in dieing process, the model of press was established.

根据模切机的两大平台在模切过程的干涉面积，建立了模切压力模型，利用计算机编程分析得到了模切压力在一个运动周期内的变化情况，为提高模切机的工作性能提供了理论依据。

In addition, the combined weight of the loaded pers onnel platfo rm and its rigging must not exceed 50 percent of the rated capacity of the crane or derrick for the radius and configuration of the crane or derrick.

此外，加载的载人平台与其索具的总重不能超过吊车或起重机在其工作半径和配置一定时的额定载荷的50%。

Have all brakes and locking devices on the crane or derrick set when the occupied p ersonnel platfor m is in a stationary working position.

使用中的载人平台处于静止工作状态时，拉好所有制动和锁定装置。

One of the rig crew members who gets his name from the fact that he works on a platform attached to the derrick or mast, typically 85 ft [26 m] above the rig floor, during trips.

钻井队的成员之一，井架工名字的由来起源于起下钻时他工作在与井架或桅式井架连接在一起的一般距离钻机平台有85英尺高的平台上。

March 9, 2004, after the board of directors of meticulous planning, business development from the long-term strategic considerations, investment companies再增calendar 16,000 million, in Foshan City, clever Cangjiang Industrial Park, 300 acres of land and exemptions, a more For large, more modern industrial processing of large aluminum platform, the first phase has been completed formally put into production, and have all casting, extrusion, machinery Mosha, anodizing, electrophoresis painting, Fenmo spraying, Fu Tanqi spraying, thermal transfer grainy, Broken Bridge insulation production, polishing line and die, testing, testing, machining, doors and windows curtain wall design, production installation, and through the strengthening of the study, to The production of aluminum alloy grades of the level of annual production capacity of more than 30,000 tons, 40,000 tons more than Lvbang.

2004年3月9日，经过公司董事局精心策划，从企业发展的长远战略考虑，企业再增投资历16000余万元，在佛山市高明沧江工业园人和辖征地300亩，建立更为大型，更为现代化的大型铝型材工业加工平台，第一阶段工作现已完成正式投入生产，且完全具备熔铸、挤压、机械磨沙、阳极氧化、电泳涂漆、粉沫喷涂、氟碳漆喷涂、热转印木纹、断桥隔热生产、抛光线及模具、试验、检测、机械加工、门窗幕墙设计、制作安装、并且通过加强工艺方面的研究，达到生产各种铝合金牌号合金的工艺水平，年生产能力三万吨以上，铝棒四万吨以上。

The main works of this paper are as follows.First, according to the three-step method, 1-D unsteady flow model in river network is introduced. A new topological structure is presented to describe and store the topology information and data in river network ,which realises the connection between GIS and the numerical program of hydraulic calculating and turns the program into a universal one .A new formula of internal boundary conditions with double-recursion algorithm is deduced, and the relationship of recursive coefficient between imaginary channel length and non-imaginary channel length is presented ,which makes sure that the model can comprise the numerical simulation of the internal boundaries such as side pipe outflow ,barrage, slice gate and drainage pump station.

主要工作如下：(1)根据三级解法建立了一维河网非恒定流模型，并提出了一种新的数据结构来描述和储存河网拓扑信息，方便了GIS平台和数值计算程序的衔接，实现了三级解法程序的通用性；从河段方程组出发，根据虚设河段法推导出了内边界条件的双追赶法公式，指明了虚设河段的追赶系数和非虚设河段追赶系数的关系，从而使模型可以模拟集中旁侧入流、堰、闸、水泵等内边界对行洪过程的影响。

For example : national norms, in areas of our earthquake-proof residential projects prefabricated staircases time board must rest with the platform stairs reliable welding is a cost neither more nor technology investment difficult, but some construction units do not seriously, and even not getting to the mandatory standards, even as a child's play.

国家规范规定，在抗震设防地区，住宅工程预制楼梯踏步板必须与楼梯休息平台可靠焊接，这是一项既不多费投资也无技术困难的工作，但有的施工单位却不认真地做，甚至根本不做，将强制性标准的规定，竟视为儿戏，导致工程的抗震能力严重下降。

Recent progress in radio prototype has extended the horizons of radio technology by liberating chronics dependence on hard-wired characteristics including frequency band, channel bandwidth, and channel coding. These efforts have led us to the feasibility of dynamically programmable receivers system of software radio.

软件无线电系统的硬件结构与功能相对独立，这样就可以基于相对通用的硬件平台，通过软件实现不同的通信功能，并可对工作频率、系统频带、调制方式等进行编程控制，系统的灵活性大大增加。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。