并讨论了这一方法与扫描法相比的优点

A.As compared with the scanning method, the advantages of this method have also discussed.

B.The advantages of this method over the scanning method have also been discussed.

C.It has also been discussed the advantages of this method compared with the scanning method.

D.Comparing this method with the scanning method, the advantages of this method have also discussed.

A.价格便宜

B.分析时间短

C.设备简单

D.扫描速度快