This paper shows us a study of the division and combination problem of DE on the basis of division and combination history along with a division and combination perspective.

建立了集合划分问题的优化数学模型，结合遗传算法的思想提出的粒子群算法来解决集合划分问题。

youdao

Goldsmith said that most second-generation, or 2G, cell phones use a combination of time division and frequency division.

戈德史密斯说，大多数第二代手机或2G手机采用时间划分和频率划分相结合的方式。

youdao

The point of this convoluted procedure is that this combination of multiplication and division produces a pure, dimensionless number.

这个复杂运算过程的关键在于，这种乘除法混合物生成了一个纯粹的无因次数。

youdao

Around 80 entrants, often in teams of two to four, vie for the title of Best Beef Roast in one of three divisions based on personal roasting experience -- first-year roasters in the Rare Division, one- to nine-year roasters in the Seasoned Division and 10-year veterans in the Well Done Division -- by using just the right combination of spices, herbs and sauces to wow the judges.

BBC: Wisconsin parades a bounty of beef