随著平均前置时间与前置时间变异性的增加。
The variability in demand increases as the average and the variance of lead time increase.
临界负荷主要取决于到发线数量和驼峰作业时间变异系数。
Critical load is mainly determined by the number of receiving and departure track and coefficient of variation of hump-working time.
基于静水载荷的时间变异性，导出了一种静水载荷效应与波浪载荷效应组合的新方法。
On the basis of the time variation of still water load effects, a new method is developed for the combination of still water and wave induced load effects.
基于静水载荷的时间变异性，导出了一种确定静水载荷效应与波浪载荷效应组合极值的新方法。
On the basis of time variation of still water load effects, a new method was developed for the combination of still water and wave induced load effects.
盐分的时间变异系数(0.30 - 0.85)大于水分的变异系数(0.02 - 0.40)，说明盐分的运移机制比水分运移机制复杂。
Temporal variability coefficient of salt (0.30 ~ 0.85) is larger than that of water (0.02 ~ 0.40). Salt transfer mechanism is more complex than water transfer mechanism.
适应性变异最初表现为小群人发病，一些证据显示人际传播，这或许可给世界一些时间采取防御行动。
Adaptive mutation, expressed initially as small clusters of human cases with some evidence of human-to-human transmission, would probably give the world some time to take defensive action.
大部分感染人群在很短时间内会使得流行性疾病发生变异，甚至病毒本身就不是一个有效杀手。
And the large Numbers infected within a short time make pandemics disruptive, even when the virus itself is not an efficient killer.
是否有潜伏期-在接触变异病毒之后有多长时间才产生症状-与已知流感病毒不同，通常是1-3天。
Whether the incubation period — the time it takes to develop symptoms after exposure to a mutated virus —differs from that for known influenza viruses, usually one to three days.
这种假设解释了在一段时间内表型性状的随机变异，但没有解释表型性状为什么会进化。
This assumption explains the random variation of phenotypic traits over time, but it doesn't explain why phenotypic traits evolve.
科学家能够在一种老鼠的身上复制这一基因变异，结果发现，这种老鼠需要的睡眠时间也比平常少了。
The scientists were able to replicate the gene variation in a strain of mice and found that the mice needed less sleep than usual, too.
但要得到最合适的变异基因，耗费的时间会非常长，尤其是所要达到目标非常小时，如DNA中用来控制别的基因的区域部分，将是一项旷日持久的工程。
But it can take a long time for the right mutation to occur, especially if there is a very small target, like the region of DNA that controls a gene.
我们认为她的基因当中负责变老和成长的基因发生了变异，因此她看上去就仿佛被时间凝冻了。
We think that she has a mutation in the genes that control her ageing and development so that she appears to have been frozen in time.
至于病毒变异为人间传播类型从而威胁人类健康，其基因到底需要改变多少和发生何种改变，有关专家还难以确定，也无从知晓这种变异到底需要多长时间。
Experts are unsure as to how much, and what kind, of genetic changes would be required for the virus to become a global health threat. Nor do they know how long this process might take.
与正常的老鼠相比，携带一个变异基因的老鼠睡眠时间少1.2小时，而携带有2个变异基因的老鼠睡眠时间少2.5小时。
Compared with the normal mice, those with one mutant gene slept about 1.2 hours less, and mice with two mutant genes slept 2.5 hours less.
现在看起来，似乎是在上千万年的时间跨度中，将类似的功能变异整个串联起来才使得鸟类获得了飞行的能力。
It now looks like bird flight was made possible by a whole string of such exaptations stretching across millions of years, long before flight itself arose.
沃金还注意到，变异似乎是在很长时间以前出现并已经广泛分布开了。
The mutant receptor appears to have evolved long ago and to be widely dispersed.
环境所引发的基因变异被称为“表观遗传变化”，它可能会影响基因被激活的时间、被激活的程度以及它如何与邻近基因相互配合。
Environmentally triggered alterations in genes - known as epigenetic changes - can affect when a gene is activated, how robustly it is turned on and how it interacts with neighboring genes.
现在夏普正进一步的计划在总决赛时间段加入音频分析，心率变异，皮肤电测量等技术，就像是测谎仪一样。
Plans are underway to further develop the technology in time for the finals by adding audio analyses, heart rate counts, and skin conductivity measurements; similar to those used in lie detectors.
当那个变异的基因复制到白鼠身上时，白鼠们也睡眠时间很短。
When that genetic tweak was replicated in mice, they slept less too.
对于有时间窗的非满载VSP问题，将货运量约束和软时间窗约束转化为目标约束，建立了非满载VSP模型，设计了基于自然数编码，使用最大保留交叉、改进的反转变异等技术的遗传算法。
On the VSP with time window, while the restraints of capacity and time windows are changed into object restraints, a mathematic model is established.
所有患者的疾病仅占总体时间为13个月，但是，那些只有肿瘤组织中存在变异的患者的生存期要长于那些肿瘤组织和血浆中均存在变异的患者。
Overall time to progression for all patients was 13 months, but it was longer in patients with tumor-only mutations than in those with tumor and serum mutations.
结论对于脑死亡的供者器官切取采取原位灌洗，整块切取及体外修整，可最大限度地缩短热缺血时间，有效避免变异血管损伤，进而提高供者器官的利用率。
Conclusions For the brain-dead donor, in situ perfusion, en block resection can reduce the warm ischemic time, avoid injury of anomalous artery effectively, and ensure the high organ utilization rate.
从理论上分析了变异概率对平均首次命中时间的影响。
The influence of mutation probability on the mean first hitting time is analyzed theoretically.
临界密集到达时间受到达流强度、变异系数、驼峰作业负荷等因素的影响。
The critical intensity arrival time is influenced by input flow intensity, coefficient of variation, hump-working load, etc.
表明应力应变异常形态的时间特征与地震的孕育和发生有较明显的关系。
The results show that the anomalies' shape character of stress and strain has obvious relation with the development and occurring of earthquakes.
他们还指出用CRP变异体来反映暴露于CRP的时间比及时检测某一单一时点的CRP血清浓度更准确。
They also suggest that CRP gene variants may reflect lifetime exposure to CRP more accurately than CRP serum concentrations measured at a single point in time.
通过对1998年及2002年地下水样品的分析，得出该地区地下水矿化度在时间与空间上皆存在明显的变异性。
Analysis of groundwater sampling from 1998 to 2002 indicates that the mineralization degree of groundwater varies both temporally and spatially in this area.
他们还发现，睡眠时间短与降低的心率变异性降低之间存在着重要的但是缺乏一致性的关系。
They also found a significant but less consistent pattern with shortened sleep duration and decreased heart rate variability.
他们还发现，睡眠时间短与降低的心率变异性降低之间存在着重要的但是缺乏一致性的关系。
They also found a significant but less consistent pattern with shortened sleep duration and decreased heart rate variability.
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