- 推荐网络例句
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Money can buy hundred tonics but not the healthy body.
钱可买到上品补药,但买不到健康之身。
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Some key part is ameliorated to meet the demands of working. This thesis mainly includes:(1) Analysing the working principle of the spring operateing mechanism, expatiating the character of the mechanism;(2) With the design aim of the spring operating mechanism, accomplishing the design of ZW□-12/630-20 outdoor HV vacuum breaker based on the systemic design theory of the spring operating mechanism, which includes spring mechanism of open-close switch; cam mechanism based on the principle of power balance; buckle-off mechanism with force-minished device; ratchet wheel mechanism with number-increased detent;(3) In the design on the spring operating mechanism for the outdoor vacuum breaker, using the air cushion device with speed controller to ensure the steady working of the spring operating mechanism;(4) Accoding the problem of daily maintenance for HV circuitbreaker, giving some effective steps of daily maintenance.
论文工作主要包括以下几个方面:(1)从真空断路器弹簧操动机构的功能原理出发,详细分析了该机构的工作原理,阐述了机构工作的基本特性;(2)根据工程实际提出了真空断路器弹簧操动机构的设计目标,在系统分析弹簧操动机构设计理论的基础上,完成了ZW□-12/630-20型户外真空断路器弹簧操动机构的设计工作,其中包括真空断路器弹簧操动机构的分合闸弹簧机构的设计;以输出力特性曲线设计机构理论演化出的功率平衡原则为基础的凸轮机构的设计;带有减力机构的滚动摩擦扣结方式的脱扣机构设计;根据实际情况增加了棘爪数量的棘轮机构设计;(3)在真空断路器弹簧操动机构的设计中,引入了速度控制模式空气缓冲器,对惯性负载起到了良好的自动缓冲效果,从而保证了真空断路器弹簧操动机构稳定、有效地运行,保证了真空断路器的动作质量;(4)针对目前真空断路器运行过程中存在的问题,提出了有效的日常维护措施。
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With a registered capital of RMB50 million yuan, the company deals mainly in coals, charcoals, petroleum products, steel products, warehousing and property management.
作为全省燃料供应的主渠道,公司走过了50多年的历程。