The paper analyzes the difference in performance from two ways of using labor: single calculation and doublecalculation.
本文试图从两种使用劳动力的途径（“单值核算”和“复合核算”）着手来论述这种绩效差别。
2
Theoretic calculation show that wavelet can be reconstruct from double spectrum of theoretical seismic data for seismic wavelet with different characters.
理论计算表明，对不同性质的地震子波，均可从理论地震记录的双谱中重构子波。
3
The calculation equations of distributed force model are derived for actuators bonded on structure by single-sided and double-sided.