Hexagon socket set screws , truncated cone point . iso thread 内六角截锥体止动螺钉. iso螺纹
Aircraft fasteners . non - magnetic pan head screws with truncated cone point . cross recess 航空紧固件.带截顶锥十字槽非磁性大柱头螺钉
Abrasive products . specification for dimensions and designation of truncated cone abrasive sleeves 研磨制品.第1部分:截锥形研磨套筒尺寸和标记规范
New object tools , including rounded rectangle , box , ellipsoid , cylinder , cone , torus , truncated cone , and tube 新增了圆环、立方体、圆柱体等实体模型的建造方法。
The mound is roughly heart shaped and probably was originally built in the form of a truncated cone 这座土石丘大致呈心形,可能当初就是按无顶圆锥体的形状进行建造的。
The complex consists of circular defensive towers in the form of truncated cones built of dressed stone , with corbel - vaulted internal chambers 这一综合结构包括用修琢的石头堆砌而成的锥状环型防御塔,以及在塔内用梁托支撑成的套间。
The ultrastructure of the merozoites of eimeria tenellawas observed and discribed . the pellicle consist of two layer membranes , the outer membrane was a continous covering enclosing the whole merozoites , while the inner pellicular complex is interrupted at the anterior and the micropore , and thicken to form the polar ring and micropore . there are 24 microtubules under the pellicle of the merozoite which originated from the polar ring , all of them are connected with the polar ring , and extend alongside the inner pellicular complex to the middle of the merozoite . the head of the merozoite consists of a conoid , an apical vesicule and polar ring . the conoid is a hollow truncated cone . the conoid and spical vesicule can stretch and contract . there are three or more rhoptry and a lot of micronemes . the nucleus has nucleolus . and two layer membranes 利用透射电镜对柔嫩艾美耳球虫裂殖子的超微结构进行了观察描述.柔嫩艾美耳球虫裂殖子的表膜由外膜和内膜复合体两层组成,外膜连续,内膜复合体在头部断开形成极环,在其它部位断开形成微孔;裂殖子的膜下微管24根,起始于极环,向后延伸至细胞核处;裂殖子的头部由顶泡、锥体和极环组成,锥体和顶泡可以伸缩;柔嫩艾美耳球虫裂殖子棒状体3个以上,微线数量很多,二者都由电子致密的结构组成;细胞核位于裂殖子的中后部,外被双层膜,有电子致密的核仁和染色质