一般季节性流感的潜伏期约为二至三天，而H5N1禽流感的潜伏期可能比其长一些。
The incubation period for H5N1 avian influenza may be longer than that for normal seasonal influenza, which is around two to three days.
老鼠研究使用的皮肤贴有100个针头，每个长650微米，宽约为几缕发丝。
Patches in the mouse study contained an array of 100 needles, each some 650 microns in length, or about the width of a few strands of human hair.
他们推断这种鸟的颅骨在其活着的时候可能约为1英尺长。
They conclude that the skull of the bird during its lifetime would have been about a foot long.
只有门和窗框的硬木，才使用了一些时间不长(约为50年到100年或稍长)的树木。门窗结构设计得便于更换，甚至不需要更换。
The hardwoods for door and window frames are accepted as short-lived, fifty years to a century or so, and construction is designed to make replacement easy or even unnecessary.
磁共振力显微技术的原理是，将被测样本附着在一个很小很小的硅悬臂上（约为1亿分之一米长和1000亿分之一米宽）。
With MRFM, the sample to be examined is attached to the end of a tiny silicon cantilever (about 100 millionths of a meter long and 100 billionths of a meter wide).
这个间距有两个优势分布，一个短距的为480—550公里，另一个长距的为1100公里左右（后者约为前者的一倍）。
The distance span has two predominant distributions, one at a shorter distance of 480-550km, the other at a longer distance of about 1100km (the latter distance is about twice the former).
发现真实结构燃烧室内的回流区不再是轴对称，主燃孔和二次气流的存在使回流区明显被压扁（最扁处的长轴约为短轴的1.6倍）；
The presence of primary hole air flows remarkably squeezes the recirculation zone, resulting in a elliptic-like cross section, with the long axis is longer than the short one up to 1.6 times.
梳妆水的香精含量大约为1- 6%，香气比较淡，持续的时间也没有那些香精含量更高的香水长。
Eau DE toilette has around 1-6% perfume concentrates. This makes for a light scent that doesn't linger as long as the more intense versions.
两条鞭毛稍不等长，着生于细胞前端，鞭毛长约为细胞直径的1。倍。
The length of the flagella is about 1.5 times as the cell diameter.
由于某些类星体在不到一天的时间里明显增亮或变暗，其产能区应该不会比光一天行进的距离长，即约为我们太阳系的大小。
Because some brighten or dim significantly in less than a day, their energy-producing regions must be no larger than the distance light can travel in a day - about the size of our solar system.
由于某些类星体在不到一天的时间里明显增亮或变暗，其产能区应该不会比光一天行进的距离长，即约为我们太阳系的大小。
Because some brighten or dim significantly in less than a day, their energy-producing regions must be no larger than the distance light can travel in a day - about the size of our solar system.
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