The total activity towards whole cellulase was studied with filter paper breaking time and the corresponding activity calculation formula was then defined.

本文对滤纸崩溃法表征纤维素酶的总活力作了较系统的研究，制定了滤纸崩溃法的酶活计算公式。

youdao

The total amount of activity should be spread over at least three days throughout the week.

VOA: special.2010.06.08

If the use of cash or electricity is growing much faster than the measured economy, this might indicate that the informal share of total activity is rising.

ECONOMIST: The informal economy is neither small nor benign

Tim Probert, president of global business lines, says that horizontal drilling, a process in which a well is drilled down vertically and then angled around a curve to reach reservoirs from a horizontal angle that increases the well's exposure, is now 55% of Halliburton's total activity.

FORBES

Groups account for too small a fraction of total angel activity for that.

FORBES: How Much Did Angel Groups Invest Last Year?