In general, the heavier atoms in the atmosphere sink and the light ones remain at the surface, which is why some white dwarfs, for example, have mostly pure hydrogen or helium atmospheres.
总体来说，较重的原子在大气圈中沉积，而较轻的原子则存在于大气圈表面，这也是一些白矮星具有较纯净的氢和氦大气圈的原因。
At the time it was very far from commonsense and it's a mark of how far we have come that we now accept the ultimate principles of science are ones that we cannot hope to base on pure reason.
但是当那些内容远没有成为常识的时代，当我们如今已经接受的，自然科学和最终原理还未被采纳的时代，我们不能寄希望于纯粹的推理。
In the functional version, I extracted the pure functions (ones that have no side-effects) into their own class, calling them by supplying parameter values.
在函数式版本中，我提取了纯函数(即没有副作用的函数)并将其放入它们各自的类中，通过提供参数值来调用它们。
It delivers enhanced safety features far beyond your conventional bike but still encapsulates the pure thrill you get from traditional ones.
它提供了远远超出传统自行车的增强安全功能，但仍封装纯刺激你从传统的获取。
I'm convinced that about half of what separates successful entrepreneurs from the non-successful ones is pure perseverance.
我相信成功企业家和不成功企业家的区别有一半的原因在于纯粹的毅力。
I'm convinced that about half of what separates the successful entrepreneurs from the non-successful ones is pure perseverance.
我确信，成功企业家与失败企业家的分别，纯粹就是坚持与不坚持。
I'm convinced that about half of what separates the successful entrepreneurs from the non-successful ones is pure perseverance.
我确信分隔成功企业家与不成功企业家约有一半是纯綷的坚持不懈。
You have to think about it like this: the light color is going to light the non occluded parts, while the dark one is going to light the occluded ones... so, avoid pure black and pure white!
你必须想想这样的：光的颜色会照亮没有被遮住的部分，而黑暗是是遮住的部分变暗…因此，避免纯黑色和纯白色！
The approach for pure torsional analysis of thin-walled composite box beams with single-cell was extended to ones with multi-cells.
将单箱单室复合材料箱形梁纯扭转的分析方法拓展到单箱多室。
Wang and Liu Xiangmei say that happiness is and loved ones together, which is able to see through all the fame and fortune, and loved ones to live a simple and pure life.
王海和刘向梅都说，幸福就是和心爱的人在一起，就是能看透一切名利，和心爱的人过上简单纯真的生活。
Commercial structures differ from the pure-experimental and academic ones due to the need to adapt the structures to be used in a variety of sensitive environments.
由于需要适应各种不同的敏感环境，商业结构与纯实验和学术建筑结构有所不同。
The systems with disturbances and non-affine unknown functions have low triangular structure that generalizes both strict-feedback uncertain systems and pure-feedback ones.
它是严格反馈不确定系统和纯反馈系统的更一般化的表达。
The systems with disturbances and non-affine unknown functions have low triangular structure that generalizes both strict-feedback uncertain systems and pure-feedback ones.
它是严格反馈不确定系统和纯反馈系统的更一般化的表达。
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