if the performance of the ams fails to meet either or both of these drift tests, the cause for this failure should be determined and corrective action taken before the zero- and span-drift testing is repeated. 문장에서요, if the performance of the ams fails to meet either or both of these drift tests 문장하고before the zero- and span-drift testing is repeated는 해석 되는데요,
the cause for this failure should be determined and corrective action taken 문장이 해석이 안 돼요. 특히 corrective action taken 이요!어떻게 the cause for this failure should be determined 다음에 and corrective action taken이 올 수가 있죠?

가르쳐 주시면 정말로 감사하겠습니다.