commencement of operation是什么意思

用法例句

Analysis of initial cracking behavior of expansive soil due to evaporation;

地表蒸发条件下的膨胀土初始开裂分析

Numerical model of contraction joints with initial openings in arch dams and its verification with shaking table tests;

拱坝横缝有初始开度的数值模型和试验验证

The GAP elements in MSC/NASTRAN can simulate the stresses and conditions of the joints with initial opening.

MSC/NASTRAN中有反映接缝间隙的GAP单元 ,可较好地反映有初始开度的接缝应力和接缝条件。