英语语法分析

The result shows that the unit weight of culm changes along with the age of culm.

结果表明，竹杆容重随年龄的变化反映了毛竹个体独特的生长分化特点。

The higher content of that in culm and sheath was a character of active carbohydrate metabolism.

茎鞘中高含量的可溶性糖是茎鞘碳水化合物代谢活跃的特征；

Culm sheath asymmetrical, one side smooth, the other rugate , apex with unequal rounded shoulders.

不对称的竿箨，顺利的一边，有皱的另一个，先端具不同的事物绕行肩。