2N-COUNT [usually singular](增长的)倍数 If an amount increases by a factor of two, for example, or by a factor of eight, then it becomes two times bigger or eight times bigger. (增长的)倍数
The cost of butter quadrupled and bread prices increased by a factor of five. [+ of]
黄油价格涨了 4 倍,面包价格涨了 5 倍。
3N-SING 系数 You can use factor to refer to a particular level on a scale of measurement. 系数
...suncream with a protection factor of 8.
防晒系数为 8 的防晒霜
4N-COUNT 因子;因数 A factor of a whole number is a smaller whole number which can be multiplied with another whole number to produce the first whole number. 因子;因数 [technical]