Terms for subject Mathematics containing at a time

English	Russian
a few drops at a time	по нескольку капель каждый раз
a little at a time	небольшими порциями
a permutation of n things taken m at a time	размещение из n предметов по m
at a later time	позже
at a later time	позднее
at a time	в данный момент времени
byte at a time	канал с побайтовым обменом
combination of n things r at a time	сочетание из n элементов по r
enough energy should be delivered to a the satellite at the time it is launched	в то время
many tables of values for special functions could be calculated at a time when pencil and paper were the only available орудия	единственно доступные инструменты
many tables of values for special functions could be calculated at a time when pencil and paper were the only available tools	единственно доступные инструменты
one at a time	поодиночке
one-factor-at-a-time design	план однофакторного эксперимента
permutations of n things taken m at a time	размещение из n элементов по m
taken two at a time	взятые по два
the number of combinations of n elements taken r at a time	число сочетаний (C(n, r))
two weeks at a time	две недели подряд