A cache that expires too often can result in unnecessary performance degradation; therefore cache lifetime values are also important to tune.
太频繁过期的缓存会导致不必要的性能下降；因此，优化缓存生存期值也是非常重要的。
They are also a function of a peculiar labour market with lifetime employment, a wage system based on seniority rather than performance, and little job mobility among managers.
同时这种薪酬制度也有助于维护该国特有的讲究论资排辈和缺乏流动性的终身雇佣制为基础的劳动力市场。
Relatively low levels of exposure can reduce their IQ scores, cause learning disabilities, poor school performance, and violent behaviour, all of which may contribute to reduced lifetime earnings.
较低量接触可降低其智商评分，引起学习障碍、学习成绩不良以及暴力行为，所有这些可促使终生减少收入。
Setting the correct cache sizes and lifetime values is critical in achieving optimal performance.
设置适当的缓存大小和生存期值对于实现最佳性能非常关键。
Of course, SQL performance is a complex topic, and understanding every nuance of how SQL performs can take a lifetime.
当然，SQL性能是一个复杂的话题，而且了解SQL的执行方式的每一个细微差别可能要花一生的时间。
The New York Board of Trade's dollar index, which tracks the dollar's performance against a basket of six currencies, tumbled to a lifetime low.
纽约期货交易所跟踪美元兑六种主要货币的美元指数(dollar index)跌至历史最低点。
Test of cutting performance shows that its lifetime can be increased greatly.
切削性能试验表明，激光硬化的刀具寿命可以大大提高。
Experimental results show that our algorithm has a better performance on network lifetime than the common clustering algorithms.
实验结果表明，新算法较常见分簇算法更能够延长网络寿命。
The reason of space environment effect related to electric thruster system and its affection to performance and lifetime of spacecraft were introduced in this paper.
介绍了与电推进系统有关的空间环境效应的形成原因及其对航天器性能、寿命等的影响。
The performance of hard alloy was improved and the lifetime of hard alloy tools prolonged with changing the type and status of residual stress in hard alloy.
通过改变硬质合金剩余应力类型和状态，改善了硬质合金的性能，提高了硬质合金工具的使用寿命。
It also indicates that the cleanness degree of devices and the purification of the working fluid will greatly influence the performance and working lifetime of the EHD micropump.
研究还表明，微泵的性能与工作寿命和实验环境的洁净度以及工作流体提纯密切相关。
The product is a new energy-saving lighting source, with the performance of high brightness, low attenuation, long lifetime and high reliability.
本产品是一种新型高功率节能光源，它具有亮度高、衰减小、寿命长、可靠性高等优点。
Performance pledge XY1080 series of mobile folding table a one-year warranty, lifetime warranty welding point.
性能承诺XY1080系列移动式折叠台享受1年保修，焊接点终身保修。
Without attention, this will affect its performance during its lifetime and affect its ability to perform as it should.
如果不注意维护的话，钢琴的生命期内钢琴的性能将会受到影响，削弱其本身应有的表现力。
The results of simulation experiment show the calculated optimal energy threshold can extend more network lifetime than other threshold, and maximize the performance of VEAC.
仿真实验结果证明了求解出的最优能量阈值比其他阈值更能延长网络存活时间，把VEAC的性能发挥到最大。
The purpose of low power design is to minimize the energy consumption of an embedded system and extend the lifetime of battery without losing its performance.
嵌入式系统低功耗设计的目标是在满足用户对性能需求的前提下，尽可能降低系统的能耗，延长设备的待机时间。
Although heat preservation of some systems is good have defects of short lifetime, poor fireproof performance, exterior decoration of which is big to be affected and etc. ;
有的系统虽然保温性好，但存在寿命短、防火性能差、外装饰受外界影响大等缺陷；
Steam flaking maize and wheat effectively increased the level of gelatinized starch in both maize and wheat (Table 7) but did not benefit post-weaning or lifetime pig performance.
蒸汽压片处理的玉米和小麦有效地增加了玉米和小麦的糊化淀粉水平（表7），但是它对断奶猪或猪整个生长过程的性能没有受益。
The performance of DTN, such as end-to-end delivery ratio. delay in submission, network overhead and network lifetime, is closely related to the behavior of mobile nodes.
容滞网络的性能，比如端到端的递交率、递交延迟、开销以及网络的存活时间、都与网络中移动节点的行为密切相关。
The high current which flows in the closing gas spark switch results in the electrode erosion that influences largely the switch performance especially for the lifetime.
结合旋转电弧开关和环形轨道开关特点，设计了一种旋转电弧、场畸变气体火花开关，有效地减少了气体火花开关电极烧蚀，提高了气体火花开关寿命。
Piston is a center part of Diesel so the reasonable design of piston directly relates to the reliability, lifetime and economic performance.
活塞作为发动机核心部件，它的设计是否合理直接关系到内燃机可靠性、寿命、经济性等。
Through transformation, some benefit was gained, such as energy and sulfuric acid consumption reduction, the lifetime of equipment extending and good economic performance.
通过改造，降低能耗和硫酸消耗，延长了设备的使用周期，取得了良好的经济效益。
Whenever you can, avoid finalizers because of the additional performance overhead that is involved in tracking object lifetime.
应尽可能避免终结器，因为跟踪对象生存期会产生额外的性能系统开销。
Dupont NOMEX paper is used as base of SG (b) 10 insulating system, it keeps excellent electrical and mechanical performance during service lifetime of transformer.
SG (B)10是采用杜邦NOMEX纸为基础的绝缘系统，在变压器的整个使用寿命期都保持极佳的电气性能和机械性能。
Hot pot. And we have gone behind-the-scenes of this immense festival, as no-one has done before. They are about to do the performance of a lifetime.
火锅我们进入了这一伟大节日的幕后，这可是前所未有的他们将有一次千载难逢的演出。
Hot pot. And we have gone behind-the-scenes of this immense festival, as no-one has done before. They are about to do the performance of a lifetime.
火锅我们进入了这一伟大节日的幕后，这可是前所未有的他们将有一次千载难逢的演出。
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