订阅将在一段时间后失效，比方说，24小时，或将其作为一个参数传入。
The subscription would lapse after, say, 24 hours, or that could be passed in as a parameter.
大英图书馆第一阶段专注于数字化19世纪的作品，因为它们没有涉及到版权保护，可以免费提供给读者阅读，（版权保护在原作者死后70年后失效）。
The library concentrated the first stage of digitisation on the 19th century because the books are out of copyright and so can be offered free. Copyright runs out 70 years after an author’s death.
除此以外，它还具有绝对有效期，即在定义的时间段之后将会失效。
On top of this, it has an absolute validity period which invalidates its usage after a defined period of time.
油箱应该在外部密封失效、设备关闭的一段时间内具有防潮屏障的功能。
The oil reservoir shall act as a barrier to trap moisture and provide sufficient time for a planned shutdown in the event of an outer seal failure.
分析了半再生重整装置二段混氢换热器膨胀节失效破裂的原因。
Reason of invalidation failure was analyzed on expansion joint of second stage exchanger of mixture hydrogen in semi-regenerative reformer.
在预应力锚索锚固段界面力学特性试验的基础上，研究锚固体界面在荷载作用下的变形规律及失效条件。
Based on the test of interfacial mechanics of prestressed anchorage segment, the interfacial deformation laws and the failure conditions under different loads are studied.
磨浆段螺旋套主要的失效形式为高应力磨料磨损，同时伴有腐蚀磨损。
The main failure form of pulping scroll cover is high stress grinding abrasion accompanying corrosive abrasion.
地下水渗流导致巷道掘进工作面突水或成巷段支护失效的灾害在煤矿时有发生。
Water inrush in working face and support failure of the driven roadway caused by underground seepage occur from time to time.
对每一段管道而言，其所处的环境不同，引起失效的时间也会不同，对周围环境的影响也会不同。
Aim at each segment of the pipe, the difference of the condition brings the difference of invalidation time and influence on the environment surroundings.
他强调，企业将不会为不失效的问题很长一段时间好。
He stressed that the enterprises will have, will not be good for a long time not to issue lapsed.
由于地基变形等原因，地下储油罐使用一段时间后罐体的变位会导致原标定的罐容表失效。
The volume table for oil storage tank will lose efficacy after a period of usage due to factors like foundation deformation.
综述合成氨二段转化废热锅炉失效历程分析 ，废热锅炉列管穿孔、管板泄漏及水压试验泄漏的原因 ，提出解决对策。
The reasons for the leakage of high-pressured ammonia pre-heater row tubes and seals were explained, and how to handle and prevent the occurrence of similar accidents was proposed.
煤矿掘进机主轴在服役一段时间后早期断裂失效。
The main shaft of mining entry-driving machine broken at earlier time after working for a certain time.
电子钥匙可以通过指定程序打开在提前设定好的特定时间段内所有的，吐过钥匙丢失，系统会很快的将此钥匙失效。
Each user's key can be programmed to access selected locks only on specific days and times. A lost key can be quickly blocked from the system, making it inactive.
即便在火灾被扑灭后，一段时间内土壤、管道温度会继续升高，仍有可能造成管道失效。
Even when the fire had been put out, the temperature of the soil and pipeline would continue to increase.
钻柱振动失效控制装置通过曲率段时会发生较大的弯曲变形、承受较大的弯曲应力。
Drillstring vibration control device will occur bending deformation and bear greater bending stress through the curvature.
追踪航天器在制导机动失效后的飞行轨迹的安全性，是最终平移段标称轨迹设计的主要依据。
The safety mode design of final translation trajectories of space rendezvous is investigated in this paper.
追踪航天器在制导机动失效后的飞行轨迹的安全性，是最终平移段标称轨迹设计的主要依据。
The safety mode design of final translation trajectories of space rendezvous is investigated in this paper.
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