It is found that the fiber of phloem of broussonetia is irregular elliptoid at cross section.
同时发现构皮纤维的横截面是带有中腔不规则的
结构，且
束纤维
。
状的,的It is found that the fiber of phloem of broussonetia is irregular elliptoid at cross section.
同时发现构皮纤维的横截面是带有中腔不规则的结构，且束纤维。
明：以上例句、词性
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