这个模型可以模拟在分子泵抽气通道内的气体分子速度与压力的分布。
The model can simulate the velocity and pressure distribution of molecular in the pumping channel.
简单地说，如果气体分子达到逃逸速度，它就能从一颗行星上“蒸发”。
Simply stated, a gas molecule can "evaporate" from a planet if it reaches a speed known as the escape velocity.
此外，由于气体的分子运动依赖于温度，在木星行星的低温下，即使是最轻的气体也不可能获得逃逸所需的速度。
Also, because the molecular motion of a gas depends on temperature, at the low temperatures of the Jovian planets even the lightest gases are unlikely to acquire the speed needed to escape.
就牛津大学的纳米孔技术而言，DNA分子依靠第二种蛋白质以一次一个碱基的速度通过小孔。这个蛋白质是一种被称为核酸外切酶的酶。
In the case of Oxford Nanopore's technology, the DNA molecule is fed through the hole one base at a time by a second protein, an enzyme called an exonuclease.
知道了这四个种族已经有至少一万年历史，科学家重新计算了病毒的“分子钟”，测量病毒的变异速度。
Knowing that all four strains were at least 10,000 years old, scientists recalculated the virus's "molecular clock," measuring how fast it mutates.
知道了这四个种族已经有至少一万年历史，科学家重新计算了病毒的“分子钟”，测量病毒的变异速度。
Knowing that all four strains were at least 10, 000 years old, scientists recalculated the virus's "molecular clock," measuring how fast it mutates.
在将一个DNA分子压过洞的同时，会改变离子通过的速度。
Pushing a DNA molecule through the hole changes the speed at which ions pass.
在麦克斯韦尔最初的思考实验里，侏儒按照空气分子的初始速度把分子放在了两个互相连接的盒子里。
The homunculus in Maxwell's original thought experiment could sort the molecules of air found in two connected boxes according to their velocities.
他恍然大悟，麦克斯韦没有考虑到这个小妖判定一个分子的速度是快还是慢也需要能量。
He realised that Maxwell had failed to consider the energy which the demon would require to decide whether a molecule was moving fast or slowly.
一些毒气分子附着得比较厉害，以至于他们在圆柱中穿行的速度比其他分子慢得多。
Some gases stick more than others, and hence travel more slowly down the column.
墙的另一边没有分子，因此吸引力，会降低球的速度。
There are no other molecules on that side of the wall. So there's an attractive force that makes the velocity within not quite as fast.
它们被聚集起来投入实验，此时速度大约是5米每秒——仅为空气中分子自由碰撞速度的百分之一。
They are gathered up and injected into the quantum experiment at speeds of around five meters per second - just a hundredth the speed of the molecules flying around in the air.
然后单独的长的DNA分子被送入微流控芯片，静水压通过一个窄的通道以恒定的速度牵引它们。
Single long molecules of DNA are then fed into a microfluidic chip, where hydrostatic pressure pulls them at a constant speed through a narrow channel.
然而，动力学因素，它决定了分子达到其最有利的形状的速度，事实上，指数依赖与温度。
However, a kinetic factor, which determines the speed with which the molecules change their configuration to the most favorable, is largely-in fact, exponentially-dependent on temperature.
大气最外层的空气非常稀薄，但空气分子仍能产生阻力减慢人造卫星的速度，这样工程师们就得定期把它们推回到其正确的轨道上。
Air in the atmosphere's outermost layer is very thin, but air molecules still create drag that slows down satellites, requiring engineers to periodically boost them back into their proper orbits.
加热气体使其分子运动速度加快。
分别考察了机械活化时间、温度及搅拌速度对壳聚糖溶解度和分子质量的影响。
The effects of different mechanical activating time, temperature and stirring speed on solubility and molecular weight of chitosan had been examined respectively.
毛细管电泳具有分离效率高、分析速度快、样品用量少等特点，在研究分子相互作用方面具有独到的优势。
Capillary electrophoresis has unique advantages of efficient separation, fast speed and small amount of samples required, in studying molecular interactions.
准确获得刮膜分子蒸馏器内流体的速度、温度及浓度分布具有十分重要的研究意义。
It is valuable to get the distribution of the velocity field, temperature field and concentration field that are formed in the process of molecular distillation.
光外差磁旋转速度调制光谱技术是一种对离子分子选择性测量的高灵敏激光吸收光谱技术。
Optical heterodyne magnetic rotation enhanced velocity modulation spectroscopy (OH-MR-VMS) is an absorption spectroscopic technique for selective detection of the molecular ions.
只要温度不变，分子的总平均速度也就不变。
The average speed of all molecules remains the same so long as the temperature is constant.
用物体与气体分子碰撞模型来分析物体的收尾速度以及所受空气阻力。
By the falling body with the gas molecular collision model, the resistance of a falling body is received, and the extreme speed of the falling body is analyzed.
总粘度变化，热油和滑动速度(剪切石油分子)。
The total viscosity of the oil changes with heat and sliding speed (shearing of oil molecules).
通过物理模拟方法，研究杏北油田二类油层聚合物相对分子质量、注入速度、段塞大小、聚合物溶液黏度、不同注聚方式对驱油效果的影响。
Researches have been carried out in the second reservoir by physical modeling method to find out the formula weight of the polymer, injection rate, slug size and viscosity of the polymer solution.
通过物理模拟方法，研究杏北油田二类油层聚合物相对分子质量、注入速度、段塞大小、聚合物溶液黏度、不同注聚方式对驱油效果的影响。
Researches have been carried out in the second reservoir by physical modeling method to find out the formula weight of the polymer, injection rate, slug size and viscosity of the polymer solution.
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