air injection短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 空气喷射 Results of the experiment show that the air/span> injection has a distinct effect on fiber fractionation, and a good fractionation performance is obtained with increasing the air injection. 实验结果表明，气体的充入对纤维筛分有明显的影响，随着充气量的增加筛分效果将得到改善。 cnki