1) characteristic of pipe material
管材特点
3) wood characteristic
材性特点
1.
The chemical composition,wood characteristic,fiber morphology and pulping performance of plantation paper mulberry were studied.
对人工种植构树的化学成分、材性特点、纤维形态及制浆性能进行了研究。
4) features of theme
题材特点
补充资料：东北轻合金加工厂生产的铝合金挤压管材和空心材
东北轻合金加工厂生产的铝合金挤压管材和空心材
睽铝合;;:;;;、:;产的
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条