And so it will be a surface integral, not a line integral anymore.
所以要用面积分，而非线积分。
Integral is a typical unit in control theory, whose existence leads to the integral role.
积分环节是控制理论中的典型单元，它的存在，导致了积分作用的产生。
Integral is a typical unit in control theory, whose existence leads to the integral role.
积分环节是控制理论中的典型单元，它的存在，导致了积分作用的产生。
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