失效保护

This text passes correctly elm two of Daqing oil field is united --One Song unite person who bury oil pipeline scene to live in environment survey and study, is it take a sample test , environmental corrosivity survey , corrosivity measuring of pipeline and assess of soil to excavate, is it cause person who bury pipeline antiseptic layers of invalid main factor to find out , confirm the environmental grade of corrosion of soil according to environmental comprehensive physics and chemistry index of soil, grasp pipeline antiseptic invalid law of layer , study antiseptic layers of resistivity decay law and to influence that negative pole protect, is it suitable for person who bury antiseptic layer of life-span of the pipeline calculate formulae and actual effect criterion model to propose on the basis of this text, illustrate and simply analyse oil field long to fail person who bury antiseptic layer of surplus ability to work of the pipeline, unite for elm two --One Song unite pipeline antiseptic maintenance of layer , is it put forward science rational suggestion to change.

本文通过对大庆油田榆二联——宋一联埋地输油管道所处环境的现场调研、开挖取样化验、环境土壤的腐蚀性勘测、管线的腐蚀性检测和评估，找出引起埋地管道防腐层失效的主要因素，并根据环境土壤的综合理化指标确定该段环境土壤的腐蚀等级，掌握管道防腐层的失效规律，研究防腐层电阻率衰减规律及其对阴极保护的影响，在本文的基础上提出适用于埋地管道防腐层寿命计算公式和失效判据模型，例证和浅析油田长输埋地管道防腐层剩余工作能力，为榆二联——宋一联管道防腐层的维修、更换提出科学合理的建议。

Air to air or fail safe, air to spring units

气到气或失效保护，气到弹簧装置

Unfortunately,the surge protection devices are occasionally faulty because of the protection indeterminateness due to the design and installation of SPD.We discussed the random characteristic of lightning strike,the breakdown time delay and jitter of SPD,multi-stages protection blind zone,the reflection oscillation of lightning wave between loads and SPD's,and proved the indeterminateness o...

由于SPD设计和施工带有多方面的不确定性，使被保护系统可能出现故障，导致SPD保护失效，因此从雷击特性的随机性、组成SPD元器件的击穿时延和分散性、多级保护盲区、雷电波在负载与SPD之间的反射振荡特性等方面进行了分析探讨，最终得出了SPD保护不确定性的必然性。

However, it is necessary for us design an architecture which allows subsystems to be merged into an integrated node computer in order to save cost. At the same time, it must be ensured that residual design faults in low criticality subsystem cannot corrupt high criticality subsystem while they cooperate with each other.

为设计高可信的任务关键实时操作系统，探索了基于时间隔离与空间隔离保护机制构建高可信任务关键实时操作系统的新思想，其目的是把设计缺陷所导致的失效影响控制在一个较小的时空范围内，使实时操作系统在其支撑范围内提供尽可能强的可信防范机制，在用户应用程序与系统资源之间进行符合防危策略的调度，防止发生灾难性事故。

The island cloaking device was shut down.

这岛的保护装置就失效了。

This design is aims at the situation of Qianjiaying Mine existing protective device electivity leakage protection malfunction, development the high voltage intelligence switch has the protection function of leakage, overload, short circuit and monitor, thus reduces the breakdown power cut scope,and it is advantageous for the troubleshooting, reduces the power cut time, enhances the reliability of power supply.

本设计是针对钱家营矿现有的保护装置选择性漏电保护功能失效的情况，开发具有漏电、过载、短路和监视等保护功能的高压智能开关，用以减小故障停电范围，便于寻找故障，缩短停电时间，提高供电的可靠性。

The syntype MOV surge protection can withstand the current as high as 6000A and offers shield for three lines: L-N, L-G, and N-G. Besides, it has the function of failure indicator and protection. When the protection module failed, it will disconnect and indicate the user to change one.

全模式 MOV 电涌防护，防护能力最高达到6000A ， L—N 、 L—G 、 N—G 三线保护，具失效保护及指示功能，当保护模块失效时，能及时退出并及时提示使用者更换保护模块。

European law makes it impossible for Google to digitise works still covered by copyright, which in most of Europe stays in force for 70 years after the author's death.

根据欧洲法律，谷歌不得将仍受版权保护的作品数字化。在大多数欧洲国家，版权保护直至作者死后70年才会失效。

At this time the relay contacts can be seen after the pull-off O5s This shows that ABS control module has control of the relay, as why did it after the pull-bounce, it should be is a system to monitor the failure of the circuit failure protection.

此时可看到继电器触点吸合O5s后断开，这说明ABS控制模块对继电器有所控制，至于吸合后为何又弹开，应该是系统监测到电路故障后的失效保护功能。

At this time the relay contacts can be seen after the pull-off O5s This shows that ABS control module has control of the relay,as why did it after the pull-bounce,it should be is asystem to monitor the failure of the circuit failure protection.The next testing.

此时可看到继电器触点吸合O5s后断开，这说明ABS控制模块对继电器有所控制，至于吸合后为何又弹开，应该是系统监测到电路故障后的失效保护功能接下来的检测工作。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。