怎样直观判断滴灌带产品的好坏呢？
How to judge the quality of drip irrigation belt products directly?
1、望：看表面是否光洁
1. Look: see if the surface is smooth
2、闻：是否有刺激性的气味
2. Smell: whether there is pungent smell
3、拉:看韧性,韧性强的好
3. Pull: look at toughness. It's good for toughness.
4、剪：断口壁厚是否均匀一致
4. Shear: whether the fracture wall thickness is uniform
5、折:有出白色粉的,差
5. Fold: there is white powder, poor
6、烧:烟大,不易燃的,差
6. Burning: large, nonflammable, poor