The average recovery of codeine phosphate was 00.87%, and RSD=0.7%(n=)
The average recovery of codeine phosphate was 00.87%, and RSD=0.7%(n=)
平均回收率为00．87％，RSD＝0．7％（n＝）。
The average recovery of codeine phosphate was 00.87%, and RSD=0.7%(n=)
平均回收率为00．87％，RSD＝0．7％（n＝）。