The results showed that the age of Shaoxing ducks and dietary CP level significantly affected the CP retention ratio(p <0.05).

结果表明：绍鸭对食入的CP的氮存留率显著（P＜0．05）受日龄及伺粮CP水平的影响。

The ratio of remaining fiber also increased with the increase of mass fraction of HEMA to make organic liquid retention ratio strengthen.

随HEMA质量分数的增加，纤维剩余率增加的同时，使纤维对甲苯和三氯乙烯的握持能力增强；

With the growth of the content and molecular weight of polyethersulfone, its water flux is reducing, and the retention ratio of bovine serum albumin is increasing.

随着聚醚砜相对分子质量和含量增大，膜的水通量减少而对牛血清白蛋白的截留率提高。

Melamine peaks meeting the retention time and ion ratio criteria must be compared to the positive tissue control.

即使三聚氰胺的保留时间和离子比符合检出标准也必须和阳性对照样品进行比较。

The fingerprints of Shenmai injection was established by HPLC, and the relative retention time and peak area ratio of each common peak was determined.

采用高效液相色谱法建立其指纹图谱，确定各共有峰的相对保留时间和峰面积比值。