The ability to fly automatically for an extended duration of time at high altitudes has been an elusive goal.
具有长时间在平流层自主飞行的能力，是平流层飞艇设计的一个重要目标。
The parasitized DBM larvae had prolonged their 4th instar duration obviously, and the later the larva had been parasitized, the longer this extended duration became.
小菜蛾幼虫被寄生后，其4龄发育历期较未被寄生的显著长，且寄生时龄期越大4龄历期延长越多。
When the duration of stay specified in the visa is extended, a foreigner shall adhere to the purpose specified in the original visa and stay within the extended duration of stay.
签证停留期限延长后，外国人应当按照原签证规定的事由和延长的期限停留。
At the moment, the message lasts for about eight hours before vanishing but Dr Geambasu suggests that this duration could be extended or diminished by adjusting the number of pieces of key sent out.
目前，信息可以保持大约八个小时不消失。但是基倍苏女士表示，调节发送碎片的数量可以延长或缩短信息保持完整的时间。
Jobless benefits have increased modestly, their maximum duration has been extended, and states have been given a large financial incentive to broaden eligibility.
失业补贴温和上涨、最长领取期限已被延展，而且给予各州大规模的财政措施鼓励拓宽合格的标准。
Interest rates for loans to Greece are to be reduced and their duration will be extended.
希腊贷款利率将会降低，期限会延长。
At the moment， the message lasts for about eight hours before vanishing but Dr Geambasu suggests that this duration could be extended or diminished by adjusting the number of pieces of key sent out.
不过靳芭苏博士表示，可以通过增减发送密钥片段的数量来调整销毁信息的时间长短。
If it extended 24-month loans, then private investors would be encouraged to lend to Banks for periods up to that duration as well.
如果它被延伸到24月期的贷款上，那么私人投资者也会受激励在那段时期向银行放贷。
At the exhaust gas dilution condition, the burning duration is extended and the flame speed drops faster at high initial pressure than at low one.
在废气稀释情况下，燃烧时间延长，在高初始燃烧压力时，火焰传播速度下降更明显。
If you do register, which is free, the maximum duration is extended to 15 minutes.
如果你做的注册，这是免费的，最长期限延长至15分钟。
In these circumstances the delivery date shall be extended for the period of their duration but only so far as the circumstances affected considerably the execution of the Contract.
在这些情况下，交货日期可相应顺延，但只有当这些情况严重影响到合同的履行时方可适用。
High temperature went against the accumulation of anthocyanidin and relatively low temperature extended accumulation duration.
过高的气温不利于颖果着色，适度的低温能延长颖果的着色时间。
In this case the time of performance of the Contract obligations shall be extended for a period equal to the period of duration of such circumstances.
在这种情况下的时间履行合同义务，应延长为一期，以平等的时期，时间等情况。
In this case the time of performance of the Contract obligations shall be extended for a period equal to the period of duration of such circumstances.
在这种情况下的时间履行合同义务，应延长为一期，以平等的时期，时间等情况。
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