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双语推荐：防上窜外钩

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小井眼井因其套管内径小,工具选择局限性大,加之落物复杂多样,施工难度大。为此,研制了油管节箍倒扣接头、防上窜外钩、可调式三球捞筒等小井眼井打捞工具,介绍了这几种打捞工具的结构、工作原理、技术特点、现场应用实例。这几种工具的应用提高了小井眼井打捞成功率,解决了小井眼井大修施工困难的问题,为小井眼井打捞提供了一定的技术借鉴。
It is dififcult to implement treatment in slim hole wells because of the small internal diameter of casing, big limitation on tool selection and complexity and diversity of falling objects. Aimed at this, a series of ifshing tools in slim hole wells was developed including oil pipe hoop back off sub, prevent channeling external hook and three adjustable ball overshot. The structure, operational principle, technique characteristics and ifeld application cases of these tools were introduced in this paper. The application of these tools greatly enhanced the salvage success rate solved dififcult problem of implement treatment in slim hole wells, which provide some techni-cal reference for ifshing in slim hole wells.

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针对3C防喘振控制器在解化化工分公司3TY空压机上的的成功应用,简单分析了压缩机发生喘振的原因、现象及喘振对压缩机设备的危害性。介绍了美国CCC(压缩机控制公司,以下简称3C)防喘振控制器喘振变量的计算,各种喘振控制线的含义和压缩机防喘振控制上的一些先进控制方法和特点,以及3C防喘振控制系统对现场测量信号和防喘振调节阀动作灵敏度的要求。
For successful application of 3C antisurge controller in the 3TY air compressor in the Chemical Branch of Solution , a simple analysis is about the reason and phenomenon of the compressor surge and the dangers of the surge of compressor equipment .The introduction is about antisurge controller being produced by American CCC (Compressor Control Company , hereinafter referred to as 3C) from the following aspects , the calculation of the variable surge and the meaning of various surge line of control and some advanced control methods and characteristics of antisurge control on compressor , as well as the requirement of on -site measurement signal of 3C antisurge control system and movement sensitivity of antisurge regulating valve .

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为实现汽车车身轻量化，尝试将镁合金应用在国内某桥车的车门防撞杆上。根据镁合金变形特点，把原来的一段式钢结构车门防撞杆更换为两段式镁合金防撞杆。利用有限元仿真软件，对镁合金防撞杆的动态碰撞性能进行了仿真。
In order to lighten the weight of one kind of domestic car, magnesium-alloy is used for designing its door reinforce-ments.Considering the deformation characteristics of magnesium-alloy, the original one-piece steel-made door reinforce-ments are redesigned to two-piece magnesium-alloy-made door reinforcements.Finally, the dynamic crash performance of the new door reinforcements is simulated.

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结合工艺流程及防喘系统的实际情况,分析CO2压缩机喘振及防喘失效的原因,指出工艺设计上存在的缺陷,并提出改进方案。
Based on the process and the actual situation of antisurge system ,analyze the causes of the CO2 compressor surge and antisurge failure ,point out defects of the process design ,and propose the improvements .

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分析了锦屏二级水电站10kV厂内渗漏排水泵开关位置指示异常,且断路器分闸后无法再次合上的问题,对比了断路器配置的南瑞保护防跳回路和施耐德开关本体防跳回路的差异,得出保护防跳回路和断路器本体防跳回路应用范围,提出了四种断路器防跳回路的改进方案,并比较了各自的优缺点。
Analysis was made to the abnormal switch position indication of 10 kV internal leakage drainage pump in Jinping two stage hydro-power station and the problem that the circuit breaker couldn’t be closed again later on. By comparing Nari protection anti-jump circuit switch with Schneider body anti-jump circuit which the circuit breaker configured, the application ranges for protection anti-jump circuit and body anti-jump circuit were obtained. This paper proposed four kinds of improved anti-jump circuit-breaker circuits and compared each advantage.

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采用有限元计分析方法建立高压电机定子线棒槽部结构的三维模型,计算了槽部侧面垫条绝缘结构中的电场分布以及防晕层的面电阻率、气隙长度和线棒的额定电压等几种因素对防晕层上槽电位的影响。研究表明:防晕层上的最高电位与防晕层所用材料的电阻率和线棒的额定电压基本呈线性关系,较高的电阻率取值或较高的线棒电压会导致槽电位的升高;槽部侧面气隙轴向长度较小时,防晕层上的电位能够大幅度降低;对于特定型号的电机,选用对应特定的电阻率取值范围以及结构参数,是限制过高槽电位的产生,改善电机的绝缘性能的更好措施。
A 3-D model of the slot structure of high-voltage motor stator bar is built with FEM. The electric field distribu-tion in the filler strip insulation structure beside the slot,and the influence of the in anti-corona layer sheet resistivity,air-gap length and rated voltage of stator bar on the electric potential in anti-corona layer are calculated. The results show that the high-est potential on the anti-corona layer always keeps linear relation with the resistivity of anti-corona layer and the rated voltage, and the potential can be reduced obviously when the length of the air-gap becomes smaller. As for different types of motor,these-lection of corresponding resistivity and structure parameters is the effective measure to limit the potential and improve the insula-tion performance of the motor.

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在架空输电线路的导、地线上安装防振锤，是防止架空输电线路导、地线因为振动而出现断线、断股事故的主要措施之一。但由于各种原因的作用，防振锤在安装一段时间后滑移出原有的安装位置，失去防振作用，威胁导、地线安全运行。分析了防振锤出现滑移的各种原因，并对现使用的防振锤结构提出改进措施，取得了较好的效果。
The stockbridge damper, as a major way of preventing line break or strand break due to vibration, is installed on conductors and grounding wires of overhead transmission line. However, the stockbridge damper shifts after some time from the original place due to various reasons and fails to control the vibration, which poses threats on operation safety of conductors and ground wires. The paper analyzes various reasons of stockbridge damper shifting and proposes measures for improving the structure of existing stockbridge damper. Therefore, favorable effect is achieved.

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安防技术是现代小区管理的一个重要手段，目前市场上的安防技术紧缺，采用项目教学法进行智能小区系统集成教学，不仅可以使学生从工程实践中安防技术掌握专业知识和职业技能，更重要提高了学生发现问题和解决实际问题的能力，激发学生的学习兴趣。
Security technology is an important means of modern management, the security shortage at present on the market, the project teaching method in the intelligent system integration teaching, can not only help students from engineering practice in the security technology to master professional knowledge and skills of occupation, is more important to improve the students'' ability to discover problems and solve practical problems, stimulate the students'' interest in learning.

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为了减少和避免飞机相撞的危险,飞机上需要加装机载防撞系统。但是机载防撞系统不是一个独立的系统,需要与其他机载设备交联。通过分析机载防撞系统交联关系以及与机载设备的接口特性,提出了某型运输机机载防撞系统与原机设备通过研制接口适配器实施交联的方法,给出了接口适配器的技术实现方案。据此方案研制的接口适配器已成功应用于某型运输机机载防撞系统改装工程,实现了机载防撞系统与机载设备的交联,提高了飞机空中防撞能力。
In order to reduce and avoid the risk of aircrafts collision,it is necessary for aircraft to install a traffic alert collision avoidance system(TCAS). But the airborne collision avoidance system is not an independent sys-tem,it needs to connect with other airborne equipment crosslink . Through analyzing the crosslinked relationship between TCAS and airborne equipment and interface characteristics,a method is put forward to develop the in-terface adapter to implement crosslink between TCAS and original equipment for a transport aircraft,and a tech-nical implementation scheme of the interface adapter is given . The interface adapter accordingly designed hasbeen successfully applied to a transport aircraft airborne collision avoidance system installation works,and the crosslinking between TCAS and airborne equipment is realized,and the aircraft collision avoidance capability is enhanced.

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为筛选出防治梨树黑星病的有效药剂,以黄金梨为对象,对梨黑星病进行田间防治试验,结果表明:30%己唑醇悬浮剂的防效最好,其2 000、3 000、4 000倍液3个处理在梨树叶片上的防效分别为87.23%、83.17%、80.61%,在果实上的防效分别为86.21%、83.12%、80.29%。15%苯醚甲环唑水分散粒剂3 000、4 000倍液,40%腈菌唑乳油6 000、7 000倍液、40%氟硅唑乳油6 000、7 000倍液的在梨树叶片和果实上的防效均在80%以上,供试的4种三唑类杀菌剂是防治梨树黑星病的理想药剂。
In order to select effective medicament for the prevention and control of pear scab,using Whangkeumbae pear as research material,the field control experiment on pear scab was conducted.The results showed that 30%hexaconazole SC had the best effect,the control effect of 2 000,3 000,4 000 times liquid of 30%hexaconazole SC on pear leaves were 87.23%、83.17%、80.61%respectively,and control effect on fruit were 86.21%,83.12%,80.29% respectively.Control effect of 3 000,4 000 times of 15% difenoconazole WG,6 000,7 000 times of 40% myclobutanil EC,40%flusilazole EC on pear leaves and fruit were all above 80%.The four kinds of triazole fungicides tested are ideal insecticide for chemical control of pear scab.

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