concave surface meaning in Chinese
叶片凹面
Examples
- An indented or concave surface or area
凹陷,洼地凹的表面或地区 - Used for the enlargement of circular openings , elongated holes and similar purposes . also used for the filing of concave surfaces with small radius
主要是为了扩大圆孔和相似的用途。它可以在小半径的凹面表面使用。 - Bloom , having the advantage of ten seconds at the initiation ad taking , from the concave surface of a spoon along the handle of which a steady flow of heat was conducted , three sips to his opponent s one , six to two , nine to three
他比客人早喝了十秒钟,从不断地传热的调羹柄下端的凹面啜可可的速度是:对方每啜一口,他啜三口对方每啜两口,他啜六口对方每啜三口,他就啜九口。 - 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。