体重减轻和该病的发展速度成比例。

Loss of weight is directly proportional to the rate at which the disease is progressing.

《柯林斯英汉双解大词典》

由于 P 波和 S 波以不同但相当恒定的速度传播，它们到达的间隔与到震源或初始破裂点的距离成比例地增加。

Because P and S waves travel at different but fairly constant speeds, the interval between their arrivals increases in proportion to the distance from the earthquake focus, or initial rupture point.

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城镇（人口）的增长数字意味着失业和未充分就业的情况成比例增长，绝望父母和挨饿孩子的人数也增长了。

The figures for the growth of towns and cities represent proportional growth of unemployment and underemployment, a growth in the number of hopeless and despairing parents and starving children.

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And, furthermore, that the intensity of the splitting was proportional to the intensity of the applied magnetic field.

并且谱线的分裂程度,和实验中所使用的磁场强度,是成比例的。

麻省理工公开课 - 固态化学导论课程节选

What Einstein then clarified for us was that we could also be talking about energies, and he described the relationship between frequency and energy that they're proportional, if you want to know the energy, you just multiply the frequency by Planck's constant.

爱因斯坦阐述的是我们,也可以从能量的角度来谈论，他描述频率和能量之间的关系,是成比例的，如果希望知道能量值，你用普朗克常数乘以频率就可以了。

麻省理工公开课 - 化学原理课程节选