它缺少前胸骨和中胸骨胫骨骨刺。
从上方观察甲虫时，头部通常被前胸膜所掩盖。
The head is often concealed by the pronotum when the beetle is viewed from above.
内分泌系统主要由脑神经分泌细胞、心侧体、咽侧体及前胸腺组成。
The endocrine system mainly consisted of brain neurosecretory cells, corpora cadiaca, corpora allata and prothoracic glands.
由于流场环境中的鱼类动力学建模困难，目前胸鳍模式研究进展受到制约。
Due to the difficulty of dynamics modeling in fish surrounding by the fluid, little progress has been made in the design of the current pectoral locomotion.
结论(1)CT导向是目前胸膜病变，尤其是肿瘤性病变穿刺活检的最佳引导手段。
Conclusion (1) ct is the best guiding means in puncturing biopsy procedure for pleural lesions, especially for pleural tumors.
晚期乳癌经广泛切除术后常造成前胸壁大面积缺损，而移植软组织来覆盖此缺损仍十分困难。
Wide resection of advanced breast cancer usually results in extended defect of the anterior chest wall and finding an appropriate soft-tissue to close such defect is still a difficult task.
晚期乳癌经广泛切除术后常造成前胸壁大面积缺损，而移植软组织来覆盖此缺损仍十分困难。
Wide resection of advanced breast cancer usually results in extended defect of the anterior chest wall and finding an appropriate soft-tissue to close such defect is still a difficult task.
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