现在有3000名学生参加科学计算机课程的讨论组，微积分组有2400人，而在汉语基础组中有800人。
There are now 3000 students participating in the CS study group, 2400 in the calculus study group, and 800 in the Chinese one.
该检测方法可以一定程度地反映出分组密码抵抗积分攻击的能力。
The method can also somewhat reflect the resistance ability of a block cipher to integral attack.
本文对用分组法求积分因子做了一些改进；从而使一类微分方程的积分因子，主要通过积分的运算就可以得到。
An improvement was made in grouping to find the integrating factors, so that those for some differential equations will be worked out mainly by integration.
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