Operation time measurement is one of the important ways to give standard operation time.
作业时间测定是制定标准作业时间的重要途径之一。
The operation design must meet with its operation conditions of the operation level, design inflow discharge, sediment concentration, sediment settlement design standard and the operation time.
运行设计应满足沉沙池运行水位、设计入池流量、含沙量、泥沙沉降设计标准和运用时间等运用条件。
Modifying preparation of standard curve in use of measurement, the method optimizes measuring precision, time, cost, and operation steps.
由于改良了测定中标准曲线的制备，使本发明在测定精度、时间、成本与操作步骤上得以进一步的优化；
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