convex surface meaning in Chinese
背弧面
凸面
Examples
- The convex surfaces faces toward the left .
凸面朝左方。 - A convex surface , body , part , or line
凸面、凸面体、凸面部分或凸线 - Closed convex surface
闭凸曲面 - Application : grind the surface of wood and metal . lap the hole and surface of work - piece . gind and lap flexible contoured suface , especially concave and convex surface profiles
用途：应用于木材和金属的表面抛光、工件的内孔、外壁的精磨、用于弯形物的曲面、尤其是凹凸表面和侧面的研磨、抛光。适用于铸铁、木材、钢材、有色金属、塑料。 - 2 . sperm ultrastructure the sperm is nonflagellated and composed of a main body in which including nucleus n apical cap and a little cytoplasm and a single spike extending from the convex surface of the apical cap , which consists of about twenty radial fibrillae on which exhibiting periodic cross - striations . the concave surface of the apical cap surrounds the little cytoplasm which is highly condensed and has n ' t any organella and sperm nucleus , which is uncondensed and composed of filamentous materials and many membrane - bound vesicles
外形呈图钉样，由主体部和棘突组成，主体部包括帽状体、细胞质带和精核。帽状体由约20根辐射状排列的纤丝组成，纤丝具横纹。其凸面延伸成棘突，棘突内纤丝是帽状体内纤丝的延续，亦具横纹。