求翻译：我们这个研究中使用BIS的主要目的是尽可能使两组患者的麻醉深度一致，从而较少由于麻醉深度的不同导致的两组发生率不同，而不是使用BIS来减少术中知晓的发生。是什么意思？

The main purpose of using bis in our study as much as possible so that the depth of anesthesia patients were consistent, and thus less due to the depth of anesthesia led to two sets of incidence, instead of using bis to reduce the occurrence of intraoperative awareness.

In this study we used the BIS main purpose is as much as possible so that the two groups of patients anesthesia depth and hence less anesthesia depth because of the different causes in the two groups differ from the rates, rather than using BIS intraoperative awareness to reduce the occurrence.

In our this research uses BIS the main purpose is as far as possible causes two group of patient's anaesthesia depths to be consistent, thus few because the anaesthesia depth causes differently two groups of formation rates are different, but is not uses BIS to reduce the occurrence which in the tec

Our research in the use of BIS's main purpose is to make two groups of patients as possible consistent depth of anesthesia, less so due to incidence of anesthetic depth led to two different groups of different, rather than using BIS to reduce intraoperative awareness.

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