These taxa are very difficult to be distinguished . the taxonomic confusion in the complex comes from the fact that very little is known of its diversity and complexity in morphology and cytology 三脉紫菀复合体在形态上和细胞学上的多样性和复杂性，使之成为公认的分类学上的“困难类群” 。
In comparison with ck , obvious morphological variation were observed in the transgenic tobaccos . their leaves became greener and thicker , chief veins turned bolder and thicker than those of ck 与对照相比转基因烟草在形态上发生了明显的改变：叶片颜色变深绿；叶片增厚；主叶脉变粗壮等。
The results also implied that rapd patterns within subgenus yulania were highly polymorphic . they could be effectively applied to the classification of magnoliaceae at the lower taxonomical unit 但考虑到种间形态上的差异和利于分类学特征在实际中应用，将玉兰亚属的变异类型进一步细分成5个类群。
In the developed medium or small cities , while in the construction , the centers always try to show city styles from scale , pattern and conformation , but ignore their own special characters 在发达地区的中小城市，行政中心在建设中从规模、格局、形态上都注重体现城市风格，却忽视了对自身特点的保持。
“ these kind of programs ought to be a national security priority because i really believe that winning over populations and winning over the ideological struggle is as important as the military side “这些计划应该成为国家安全的头等大事，因为我真的认为争取人民和在意识形态上取得胜利与军事同等重要。 ”
Like the fu organs morphology , the extraordinary fu - organs are mostly hollow but not the pathways for the digestion and excretion of cereal food and , like the zang argans functionally , they also store essence - qi 它在形态上与六腑相似，大多为空，但不是水谷消化和排泄的通道；在功能上与脏相似，它们也可藏精。
Twenty - six ordinary objects are turned into the letters of the alphabet through an ingenious combination of imagery and typography , making the alphabet stamps a celebration of the a - to - z of our daily lives 字母邮票以丰富的想像力，从形态上把26种平平无奇的物件与英文字母结合起来，让我们日常生活注满a至z的字母奇趣。
In feature , it is not only agriculture culture but also folk culture , according to patterns , it is the combination of material cultural stage and behavior cultural stage and psychological cultural stage 从性质上，它既是农业文化，又是民间文化；从形态上看，它是由喀斯特物态文化层、行为文化层和心态文化层有机耦合而成。
In the high - resolution seismic profile , to directly identify the diapir is often difficult due to much similarity between diapir and the invasion of igneous rock , thus leading to multi - resolution 在高分辨率地震剖面解释中，直接识别泥底辟构造存在一定困难，主要因为泥底辟构造和火成岩侵入体在形态上十分相似，容易造成解释的多解性。
