求翻译：在发掘现场，起首发掘地位较高的局部然后再发掘地位较低的局部的高位发掘与低位发掘比拟，可以缩短约12%的周期用时并可进步约8%的燃耗效率。是什么意思？

In the excavation site, the chapeau to explore the local higher status and then to explore the lower status of the local high excavation and low to explore the analogy can be reduced by about 8 percent of the approximately 12% of the cycle can progress with fuel consumption efficiency.

正在翻译，请等待...

In excavates the scene, at first excavates the status high part then to excavate status low partial top digit excavating and the low position excavating co

At the excavation site, local first excavation of higher status, and then explore the lower status of partial excavation of the excavation of the highs and lows of analogy, can shorten the cycle time for about 12% and progress about 8% of fuel consumption efficiency.