To enhances the teaching effect to have the obvious function.
对提高教学效果有着明显的作用。
The dry strength agents have showed the obvious effect to increase the dry strength.
经过试验，发现该增强剂对纸的干强度有明显的效果。
The product proved to have higher solid content and more obvious effect for paper strength.
所合成的产品固含量高， 增强效果明显。
The product proved to have higher solid content and more obvious effect for paper strength.
所合成的产品固含量高， 增强效果明显。
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